The Gallery holds the most extensive collection of portraits in the world. Search over 215,000 works, 150,000 of which are illustrated from the 16th Century to the present day.

Advanced Collection search

Sitters A-Z


Shirley O'Neill (1947-), Artist. 1 Portrait

Florence O'Sullivan. 1 Portrait

Jennifer O'Sullivan. 1 Portrait

Della Oake (1929-2022), Fashion model. 1 Portrait

Sir Charles Oakeley, 1st Bt (1751-1826), Administrator in India. 1 Portrait

Sir Charles John Oakeley, 5th Bt (1862-1938), Justice of the Peace. 7 Portraits

Sir Charles Richard Andrew Oakeley, 6th Bt (1900-1959), Insurance broker. 10 Portraits

Helena (née Beatson), Lady Oakeley (1762-1839), Artist; wife of Sir Charles Oakeley, Bt. 4 Portraits

Sir Herbert Stanley Oakeley (1830-1903), Composer. 3 Portraits

Richard Banner Oakeley (born 1835?), Architectural writer and photographer. 2 Portraits

William Edward Oakeley (1828-1912), Quarry owner and huntmaster. 1 Portrait

Sir Cecil Oakes (1884-1959), Alderman. 3 Portraits

Greta (née Hartmann), Lady Oakes (died 1977), Honour Danish Consul Bahamas; wife of Sir Sydney Oakes, 2nd Bt; daughter of Gunnar Victor Hartmann. 2 Portraits

Sir Hildebrand Oakes (1754-1822), Lieutenant-General. 5 Portraits

Philip Barlow Oakes (1928-2005), Scriptwriter, broadcaster, film critic and poet. 1 Portrait

Richard Oakes (active 19th century), Provost of King's College, Cambridge. 1 Portrait

Mrs Oakes. 1 Portrait

Sir Walter Fraser Oakeshott (1903-1987), Vice-Chancellor of Oxford University. 1 Portrait

Philip Oakey (1955-), Musician; co-founder, composer and lead singer for The Human League. 1 Portrait

Alfred James Oakley (1880-1959), Sculptor. 4 Portraits

Henry John Percy Oakley (1878-1942), Actuary. 1 Portrait

Sir John Hubert Oakley (1867-1946), Surveyor. 1 Portrait

Kenneth Page Oakley (1911-1981), Anthropologist, palaeontologist and museum curator. 1 Portrait

Octavius Oakley (1800-1867), Watercolourist. 2 Portraits

Sylvia Oakley, Actress. 7 Portraits

Thomas Oakley (1879-1936), Conservative politician; MP for the Wrekin. 3 Portraits

Hendrie Dudley Oakshott, Baron Oakshott of Bebington (1904-1975), Politician; Treasurer of the Household. 5 Portraits

Richard Oastler (1789-1861), Reformer. 3 Portraits

Lawrence Edward Grace Oates (1880-1912), Antarctic explorer. 4 Portraits

Mark Oates (active 1799), Captain in the Royal Marines. 1 Portrait

Simon Oates (1932-2009), Actor. 1 Portrait

Titus Oates (1649-1705), Informer. 23 Portraits

Verity Oates, Suffragette. 2 Portraits

Alastair Oatey, Personnel Assistant, National Portrait Gallery. 1 Portrait

Charles William Oatley (1904-1996), Professor of Electrical Engineering. 1 Portrait

Third Mate Oba, Third Officer of the Japanese ship Taisei Maru. 1 Portrait

Charles Obach (1841-1921), Art dealer; Founder of Obach & Co. 1 Portrait

Robert Obbard (active 1844), Member of a deputation to Louis Philippe, 1844. 1 Portrait

Thomas Lewis O'Beirne (1748-1823), Bishop of Meath. 1 Portrait

Merle Oberon (Estelle Merle O'Brien Thompson) (1911-1979), Film actress. 31 Portraits

Yolanda, Viscountess Obert de Thieusies (1902-1985), Daughter of Baron Romano-Auezzana; wife of Vicomte Obert de Thieusies. 6 Portraits

Fiona Jane Obert de Thieusies (née O'Brien) (1941-), Wife of Romano Louis Marie Joseph Ghislain Obert de Thieusies; daughter of Hon. Fionn Myles Maryons O'Brien. 4 Portraits

Sergey Vladimirovich Obraztsov (1901-1992), Puppet master. 3 Portraits

Graeme Obree (1965-), Cyclist. 2 Portraits

Patrick O'Brian (Richard Patrick Russ) (1914-2000), Novelist. 1 Portrait

Leslie Kenneth O'Brien, Baron O'Brien of Lothbury (1908-1995), Governor of the Bank of England. 1 Portrait

Alice O'Brien (circa 1886-1966), Actress. 6 Portraits

Arthur John Rushton O'Brien (1883-1940), Chief Medical Adviser to Secretary of State for Colonies. 1 Portrait

Brian O'Brien (died 1973), Solicitor. 1 Portrait

James ('Bronterre') O'Brien (1805-1864), Chartist. 1 Portrait

Dermod O'Brien (1865-1945), Painter. 1 Portrait

Edmund Donough John O'Brien (1858-1945), Brigadier-General. 1 Portrait

Edna O'Brien (1930-), Novelist, short story writer and playwright. 9 Portraits

Edward John O'Brien (1968-), Musician; guitarist for Radiohead. 1 Portrait

Edward Joseph Harrington O'Brien (1890-1941), Editor and anthologist. 2 Portraits

Hon. Eileen Vivien O'Brien (née de la Poer Beresford) (1912-1975), Wife of Robert Alfred O'Brien; daughter of 5th Baron Decies. 9 Portraits

Eliza Bridgeman O'Brien (née Willyams) (died 1802), First wife of James O'Brien, later 3rd Marquess of Thomond. 1 Portrait

Hon. Fionn Myles Maryons O'Brien (1903-1977), Soldier; son of 15th Baron Inchiquin. 1 Portrait

Irene Clarice O'Brien (née Richards, formerly Marchioness of Queensberry and Lady Dunn) (1898-1977), Music hall entertainer; former wife of 11th Marquess of Queensberry and of Sir James Dunn, 1st Bt, and later wife of Murrough O'Brien; daughter of Henry William Richards. 4 Portraits

Jack O'Brien. 1 Portrait

James Francis Xavier O'Brien (1828-1905), Irish nationalist. 2 Portraits

Josephine Reine O'Brien (née Bembaron) (1913-2011), Wife of Hon. Fionn Myles Maryons O'Brien; daughter of Joseph Eugene Bembaron. 2 Portraits

Kate O'Brien (née Kathleen Mary Louise O'Brien) (1897-1974), Novelist. 16 Portraits

Kendal Edmund O'Brien (1849-1909), Politician and farmer. 1 Portrait

Michael O'Brien (1937-1968), Accountant; son of Robert Alfred O'Brien. 3 Portraits

Michael O'Brien (1954-), Politician; Minister of State for Health Services. 4 Portraits

Nelly O'Brien (died 1768), Courtesan, beauty and model for Reynolds. 11 Portraits

Patrick O'Brien (1853-1917), Mechanical and marine engineer and politician. 4 Portraits

Patrick Joseph O'Brien (1835-1911), Politician, hotel proprietor, property and land owner. 4 Portraits

Richard O'Brien (1942-), Creator of 'The Rocky Horror Picture Show', actor and television presenter. 1 Portrait

Sean O'Brien (1952-), Poet. 1 Portrait

Lady Susanna Sarah Louisa O'Brien (née Fox-Strangways) (1743-1827), Actor; wife of William O'Brien. 1 Portrait

Sir Tom O'Brien (1900-1970), Politician; MP for Nottingham and trade unionist. 10 Portraits

Dame Una O'Brien, Permanent Secretary of the Department of Health. 1 Portrait

William O'Brien (1738?-1815), Actor. 4 Portraits

William O'Brien (1852-1928), Irish nationalist leader and journalist. 6 Portraits

Sir William Donough O'Brien (1916-2016), Admiral. 6 Portraits

William Smith O'Brien (1803-1864), Irish nationalist. 1 Portrait

Hermann Obrist (1862-1927), Sculptor. 1 Portrait

Edward O'Bryen (before 1754-1808), Naval officer. 3 Portraits

Cornelius O'Callaghan (died circa 1740), Lawyer and Conservative politician; MP for Fethard. 1 Portrait

Sir Desmond Dykes Tynte O'Callaghan (1843-1931), Major-General. 7 Portraits

Edmund Bailey O'Callaghan (1800-1880), Journalist and historian. 1 Portrait

Richard O'Callaghan (1940-), Actor. 1 Portrait

Hon. William Frederick Ormonde O'Callaghan (1852-1877), Politician; son of 2nd Viscount Lismore. 1 Portrait

Eileen O'Casey (Eileen Carey) (1903-1995), Actress and writer. 1 Portrait

Sean O'Casey (1880-1964), Playwright and writer. 7 Portraits

Shivaun O'Casey (1939-), Actress and theatre director; daughter of Sean O'Casey. 1 Portrait

Giuseppe Paolo Stanislao Occhialini (1907-1993), Italian physicist. 1 Portrait

Samson Occom (1723?-1792), Missionary to North American Indians. 1 Portrait

Humphrey Ocean (Humphrey Anthony Erdeswick Butler-Bowdon) (1951-), Painter. 4 Portraits

Ruby Ocean (circa 1982-), Daughter of Humphrey Ocean and Miranda Argyle. 1 Portrait

Mrs T. Ochiai. 1 Portrait

Sir David Ochterlony, 1st Bt (1758-1825), General. 2 Portraits

William Ockham (circa 1287-1347), Philosopher, theologian and political theorist. 1 Portrait

Ron Ockindon, Photographer. 1 Portrait

Michael James Palmer O'Cock (1919-2009), Brigadier. 1 Portrait

Daniel O'Connell (1775-1847), Irish politician; MP for Dublin City and Cork County. 230 Portraits

Jack O'Connell (1990-), Actor. 1 Portrait

J.C. O'Connell. 1 Portrait

Louisa Catherine Clare O'Connell (née Leighton) (died 1928), Wife of Maurice Charles O'Connell. 1 Portrait

Morgan O'Connell (1804-1885), Soldier and politician. 1 Portrait

Arthur O'Connor (1763-1852), Irish rebel. 7 Portraits

Arthur O'Connor (1844-1923), Politician and judge. 4 Portraits

Sir Denis Stuart Scott O'Connor (1907-1988), Lieutenant-General. 2 Portraits

Des O'Connor (1932-2020), Comedian, singer and television presenter. 1 Portrait

Erin O'Connor (1978-), Fashion model. 2 Portraits

Feargus Edward O'Connor (1796?-1855), Chartist leader. 5 Portraits

Frank O'Connor (Michael Francis Xavier O'Donovan) (1903-1966), Writer. 4 Portraits

Sir (William) Frederick Travers O'Connor (1870-1943), Lieutenant-Colonel. 1 Portrait

Jack O'Connor (1897-1977), Cricketer. 2 Portraits

James O'Connor (1836-1910), Journalist and politician. 2 Portraits

John O'Connor (1850-1928), Irish Politician; MP for several constituencies. 14 Portraits

Sir Richard Nugent ('Dick') O'Connor (1889-1981), General. 5 Portraits

Roger O'Connor (1762-1834), Irish nationalist. 3 Portraits

Sinead O'Connor (Shuhada' Sadaqat (née Sinead Marie Bernadette O'Connor, formerly Magda Davitt)) (1966-), Singer and songwriter. 2 Portraits

Sir Terence James O'Connor (1891-1940), Politician; Solicitor General for England and Wales. 1 Portrait

Thomas Power O'Connor (1848-1929), Journalist and politician; MP for Galway Borough and Liverpool. 21 Portraits

Charles Owen O'Conor (1838-1906), 'The O'Conor Don'; Landlord in Ireland and politician. 2 Portraits

Denis O'Conor (1794-1847), Politician; MP for County Roscommon. 1 Portrait

Sir Nicholas Roderick O'Conor (1848-1908), Diplomat. 1 Portrait

Owen Phelim O'Conor Don (1870-1943), 'The O'Conor Don'. 2 Portraits

Prince Octavius (1779-1783), Son of George III. 3 Portraits

Prudence Anne ('Prue') O'Day (1946-), Contemporary art dealer. 1 Portrait

E.M. Oddie (née Elinor Mary O'Donoghue) (1898-1961), Novelist. 1 Portrait

Henry Hoyle Oddie (1744-1830), Solicitor. 1 Portrait

William Edgar ('Bill') Oddie (1941-), Writer, actor and broadcaster. 1 Portrait

Noel Oddy (1928-1989), Businessman. 1 Portrait

Chris O'Dell (1941-), Photographer. 1 Portrait

Dick O'Dell, Record producer. 1 Portrait

Edwin John ('E.J.') Odell (1835-1928), Actor and comedian. 1 Portrait

Ernest Walter Odell (died 1976), Vicar. 1 Portrait

Francesca Odell (died 2022), Archive and Library Assistant, National Portrait Gallery. 1 Portrait

Maude Odell (O'Dell) (1870-1937), Actress. 1 Portrait

Noel Ewart Odell (1890-1987), Geologist and mountaineer. 4 Portraits

William Henry Odenheimer (1817-1879), Bishop of New Jersey. 2 Portraits

Michel Odent (1930-), Obstetrician and writer. 1 Portrait

Dora (née Labonchere), Princess Odescalchi, Wife of Prince Gialma Odescalchi; daughter of Henry Labonchere. 5 Portraits

George William Odey (1900-1985), Politician and businessman. 10 Portraits

George Odger (1813-1877), Shoemaker and trade unionist. 3 Portraits

Joyce Odiase (née Taylor), Student, Royal Academy of Music; Model. 2 Portraits

William Odling (1909-1997), Major-General. 1 Portrait

Doris Maude Odlum (1890-1985), Psychiatrist. 1 Portrait

Philip O'Doherty (1871-1926), Politician and solicitor. 1 Portrait

Cristina Odone (1960-), Deputy editor of the New Statesman. 1 Portrait

Bertram Walton O'Donnell (1887-1939), Musician and broadcaster. 1 Portrait

Elliott O'Donnell (1872-1965), Writer and lecturer. 9 Portraits

Eric Hugh O'Donnell (1893-1950), Major-General. 8 Portraits

Frank Hugh O'Cahan O'Donnell (1846-1916), Irish writer and politician; MP for Galway and Dungarvan. 2 Portraits

Peter O'Donnell (1920-2010), Writer. 1 Portrait

Sir Samuel Perry O'Donnell (1874-1946), Civil servant. 1 Portrait

Bernard O'Donoghue (1945-), Poet. 1 Portrait

Daniel O'Donoghue (1833-1889), 'The O'Donoghue of the Glens'; Irish politician. 2 Portraits

Freeman M. O'Donoghue (1849-1929), Author. 1 Portrait

William James O'Donovan (1886-1955), Dermatologist and politician; MP for Mile End. 6 Portraits

Chris O'Dowd (1979-), Actor and comedian. 1 Portrait

Sir James O'Dowd (1829-1903), Lawyer. 1 Portrait

M.J. O'Dowd. 1 Portrait

Darby O'Driscol. 1 Portrait

Eimar Ultan O'Duffy (1893-1935), Irish playwright, novelist and satirist. 1 Portrait

Dame Magdalene Anyango Namakhiya Odundo (1950-), Potter. 1 Portrait

Solomon Odunaiya Odutola (active 1950s-1960s), Bishop of Ondo-Benin, Nigeria and Bishop of Ibadan, Nigeria. 1 Portrait

Sir Michael Francis O'Dwyer (1864-1940), Indian administrator. 2 Portraits

Sean Gillespie O'Dwyer (1941-), Lieutenant-Colonel; Private Secretary and Equerry to the Duke of York and Prince Edward, Earl of Wessex. 2 Portraits

Johannes Oecolampadius (1482-1531), German religious reformer. 3 Portraits

Sean O'Faolain (1900-1991), Novelist and biographer. 6 Portraits

Bernadette O'Farrell (1924-1999), Actress. 1 Portrait

Mary O'Farrell (active 1910s), Actress. 1 Portrait

Federico Jiménez O'Farril (1890-1977), Mexican Ambassador to London. 6 Portraits

Richard More O'Ferrall (1797-1880), Governor of Malta. 1 Portrait

Ronald Stanhope More O'Ferrall (1890-1973), Bishop of Madagascar and Assistant Bishop of Gloucester. 2 Portraits

Offa, King of Mercia (died 796), Reigned 757-96. 2 Portraits

Jacques Offenbach (1819-1880), French composer and cellist. 1 Portrait

Martin Offiah (1966-), Rugby League player. 1 Portrait

Sir Frank Keith Officer (1889-1969), Diplomat; Australian ambassador to China and France. 6 Portraits

Officers, Officers bearing bannerols at the funeral of the 1st Duke of Wellington. 1 Portrait

Francis Revel Offord (1896-1969), Captain. 1 Portrait

Chris Ofili (1968-), Artist. 5 Portraits

Liam O'Flaherty (1896-1984), Novelist. 7 Portraits

Mary O'Flaherty, Fashion model. 1 Portrait

Peter O'Flaherty (1944-), Musician; bassist for Simon Dupree and the Big Sound. 1 Portrait

Agnellus of Pisa (circa 1194-1236), Franciscan friar; founder of the English Franciscan Province. 1 Portrait

(Shirley) Georgina Ogden (née Maclay) (1933-), Wife of Robert David Ogden; granddaughter of 1st Baron Maclay. 1 Portrait

Samuel Ogden (1716-1778), Divine. 2 Portraits

John Andrew Howard Ogdon (1937-1989), Pianist and composer. 6 Portraits

Sir William Gammie Ogg (1891-1979), Agricultural scientist. 8 Portraits

John Ogilby (1600-1676), Publisher and geographer. 8 Portraits

Robert James Leslie Ogilby (1880-1964), Colonel. 1 Portrait

Hon. Albert George Ogilvie (1891-1939), Premier of Tasmania. 2 Portraits

Sir Andrew Muter John Ogilvie (1858-1924), Director of Army Signals. 3 Portraits

Dame Bridget Margaret Ogilvie (1938-), Biologist. 1 Portrait

Sir Frederick Wolff Ogilvie (1893-1949), Economist and vice-chancellor. 3 Portraits

Sir (William) Heneage Ogilvie (1887-1971), Surgeon and Major-General. 4 Portraits

John Ogilvie (1578 or 1579-1615), Jesuit and saint; canonised 1976. 1 Portrait

John Ogilvie (1732-1813), Divine, poet and writer. 1 Portrait

Mary Helen (née Macaulay), Lady Ogilvie (1900-1990), Principal of St Anne's College, Oxford; wife of Sir Frederick Wolff Ogilvie; daughter of Professor A. B. Macaulay. 8 Portraits

Sir George Arthur D. Ogilvie-Forbes (1891-1954), Army captain and foreign diplomat. 5 Portraits

Derek Herbert Ogilvie-Grant-Studley-Herbert (died 1960), Husband of Nina Caroline Ogilvy-Grant, Countess of Seafield. 8 Portraits

Lady Henrietta Louisa Ogilvy (née Fermor) (1829-1888), Wife of Thomas Ogilvy; daughter of 4th Earl of Pomfret. 1 Portrait

Sir Angus James Bruce Ogilvy (1928-2004), Council and trustee of the Prince's Trust. 20 Portraits

David Ogilvy (died 1801), Lieutenant-Colonel; killed at the Battle of Alexandria. 2 Portraits

Sir David John Wilfrid Ogilvy, 13th Bt (1914-1992), Landowner and farmer. 10 Portraits

Ian Ogilvy (1943-), Actor and writer. 1 Portrait

James Robert Bruce Ogilvy (1964-), Son of Princess Alexandra, Lady Ogilvy and Sir Angus Ogilvy. 5 Portraits

Sir John Ogilvy, 9th Bt (1803-1890), Liberal politician; MP for Dundee. 2 Portraits

Julia Caroline Ogilvy (née Rawlinson) (1964-), Wife of James Robert Bruce Ogilvy; daughter of Charles Frederick Melville Rawlinson. 1 Portrait

Skene Ogilvy (active late 18th-early 19th century), Minister. 2 Portraits

Thomas Wedderburn Ogilvy (1814-1899), Army officer and landowner. 1 Portrait

Miss Ogilvy (active mid 19th century). 2 Portraits

Sir John Oglander (1585-1655), Diarist. 2 Portraits

Catherine Hannah Ogle (active late 18th-mid 19th century), Wife of John Saville Ogle. 1 Portrait

Sir Chaloner Ogle (1681?-1750), Admiral of the Fleet. 2 Portraits

Chaloner Blake Ogle (circa 1765-1857). 1 Portrait

Sir John Ogle (1569-1640), Army officer. 3 Portraits

John Ogle (circa 1652 or 1653-circa 1692), Wit and gambler. 1 Portrait

John William Ogle (1824-1905), Physician. 1 Portrait

Thomas Ogle (active 1801), Swindler. 1 Portrait

William Reynolds Ogle (circa 1816-1886), Vicar of Bishops Teignton, Devon and of Luton, Devon. 1 Portrait

Captain Ogle, Naval officer. 1 Portrait

James Edward Oglethorpe (1696-1785), Founder of Georgia. 4 Portraits

David Rees Rees-Williams, 1st Baron Ogmore of Bridgend (1903-1976), Solicitor, politician and civil servant. 28 Portraits

Major Purcell O'Gorman (1818-1888), Soldier, Irish Nationalist and politician; MP for Waterford City. 1 Portrait

Mrs O'Gorman. 1 Portrait

Gerald Vigors de Courcy O'Grady, The O'Grady (1912-1993), Lieutenant-Colonel. 4 Portraits

Sir James O'Grady (1866-1934), Trade unionist and politician. 1 Portrait

Paul O'Grady (1955-), Comedian. 4 Portraits

Hon. Thomas O'Grady (died 1882), Army officer; son of 1st Viscount Guillamore; husband of Maria de la Soledad Isabel Sofia Ball. 1 Portrait

Alexander George Ogston (1911-1996), Biochemist. 1 Portrait

Thomas O'Hagan, 1st Baron O'Hagan (1812-1885), Judge and politician. 3 Portraits

Maurice Herbert Towneley-O'Hagan, 3rd Baron O'Hagan (1882-1961), Lord-in-Waiting to King Edward VII 1907-10. 3 Portraits

Armen Ohanian (née Sophia Pirboudaghian) (1887-1976), Armenian dancer. 1 Portrait

Brian O'Hara (1941-1999), Musician; guitarist and vocalist for The Four Jays and The Fourmost. 3 Portraits

Charles O'Hara (circa 1740-1802), Army officer and colonial governor. 1 Portrait

Damian O'Hara, Retail Assistant, National Portrait Gallery. 1 Portrait

Henry Stewart O'Hara (1843-1923), Bishop of Cashel and Emly, Waterford and Lismore. 1 Portrait

Kane O'Hara (1711 or 1712-1782), Irish playwright. 2 Portraits

Maureen O'Hara (1920-2015), Actress and singer. 2 Portraits

Hector ('Pat') O'Hara Wood (1891-1961), Tennis player. 3 Portraits

Martha Armstrong O'Hare (1895-1985), Wife of Joseph James O'Hare. 1 Portrait

Don Bernardo O'Higgins (1778-1842), Revolutionary. 1 Portrait

Sir Eric James Ohlson, 2nd Bt (1911-1983), Businessman. 1 Portrait

Georges Ohnet (1848-1918), Author. 2 Portraits

Yoshiro Ohta (1900-1993), Japanese tennis player. 3 Portraits

Christine Ohuruogu (1984-), Sprinter; Olympian. 1 Portrait

David Fyodorovich Oistrakh (1908-1974), Violinist. 2 Portraits

Gertrude Alexander Okeden (née Williams), Wife of Ronald O. Alexander. 1 Portrait

Georgia O'Keeffe (1887-1986), Artist. 1 Portrait

John O'Keeffe (1747-1833), Dramatist. 2 Portraits

Sir Menus William O'Keeffe (1859-1944), Surgeon General. 2 Portraits

Stephen Martin Lanigan O'Keeffe (1878-1948), High Commissioner in London for South Rhodesia 1935-46. 6 Portraits

Dennis O'Kelly (circa 1728-1787), Racehorse owner. 1 Portrait

Seán Thomas O'Kelly (1882-1966), President of Éire (Ireland). 1 Portrait

Fola Okesola (1974-), Heavyweight boxer; Olympian. 2 Portraits

John Okey (1606-1662), Parliamentary commander and regicide. 7 Portraits

Sophie Okonedo (1968-), Actress. 1 Portrait

Lawrence Okoye (1991-), Discus thrower; Olympian and American football player. 1 Portrait

Michael Okpara (1920-1984), Premier of Eastern Nigeria. 3 Portraits

Ben Okri (1959-), Novelist, poet and short story writer. 4 Portraits

Bey Ali Fethi Okyar (1880-1943), Prime Minister of Turkey. 1 Portrait

Princess Ola Hassan (née Ola Humphrey) (1884-1948), Actress. 5 Portraits

Sir Olateru Olagbegi II (1910-1999), Olowo of Owa, Nigeria. 2 Portraits

Festo Habakkuk Olang' (1914-2004), Assistant Bishop of Mombasa and first African Archbishop of Kenya. 1 Portrait

Olaus, King of Sweden (died 950), King of Sweden. 1 Portrait

Olav V, King of Norway (1903-1991), Reigned 1957-91. 22 Portraits

Alan Oldaker (died 1987), Colonial administrator; son of F.A. Oldaker. 1 Portrait

Myrtle Oldaker (née Yatman) (died 1996), Wife of Alan Oldaker; daughter of Edward Yatman. 2 Portraits

Old-Betz, Sioux Indian. 1 Portrait

Edward Oldcorne (1561-1606), Jesuit. 4 Portraits

Claes Thure Oldenburg (1929-2022), Sculptor. 1 Portrait

John Oldershaw (1754-1847), Archdeacon of Norfolk. 4 Portraits

Peter Hubert Walter Oldershaw (1904-1992), Son of Lucian Oldershaw and Ethel Blogg. 2 Portraits

Lady (Mary) Elizabeth Oldfield (née Murray) (1913-2000), Wife of Peter Carlton Oldfield; daughter of 8th Earl of Dunmore. 8 Portraits

Anne Oldfield (1683-1730), Actress. 5 Portraits

Bruce Oldfield (1950-), Fashion designer. 3 Portraits

Claude Houghton Oldfield (1889-1961), Novelist. 2 Portraits

Josiah Oldfield (1863-1953), Lawyer, physician and writer on health. 1 Portrait

J.G. Oldfield, Mayor of Whitehaven. 1 Portrait

Michael ('Mike') Oldfield (1953-), Musician and composer. 2 Portraits

Nina Oldfield, Actress. 4 Portraits

Sally Oldfield (1947-), Singer; songwriter; sister of Michael ('Mike') Oldfield. 1 Portrait

William John Oldfield (1857-1934), Canon of Lincoln Cathedral and author. 3 Portraits

Alun Bennett Oldfield-Davies (1905-1988), Controller, Welsh BBC. 2 Portraits

Andrew Loog Oldham (1944-), Manager of the Rolling Stones. 1 Portrait

George Oldham, Vicar, St Paul's, Walden. 1 Portrait

George Ashton Oldham (1877-1963), Bishop of Albany. 1 Portrait

Henry Oldham (1815-1902), Obstetric physician. 2 Portraits

Hugh Oldham (circa 1450-1519), Bishop of Exeter. 1 Portrait

John Oldham (1653-1683), Poet. 1 Portrait

Nathaniel Oldham (active 1728-circa 1747), Virtuoso; collector of curiosities. 1 Portrait

Richard Dixon Oldham (1858-1936), Geologist and seismologist. 2 Portraits

Sam Oldham (1993-), Gymnast; Olympian. 1 Portrait

Angelica (née Pergami), Contessa Oldi (active 1815-1821), Lady of the bedchamber to Queen Caroline. 4 Portraits

Samuel Oldknow (1756-1828), High Sheriff of Derby. 1 Portrait

William Oldys (1696-1761), Norroy king-of-arms and antiquary. 1 Portrait

Arthur O'Leary (1729-1802), Roman Catholic priest and religious controversialist. 1 Portrait

M. O'Leary (active 1924). 1 Portrait

Tom Evelyn O'Leary (1862-1924), Brigadier-General. 5 Portraits

Olga Feodorovna, Grand Duchess of Russia (1839-1891), Wife of Michael Nikolaevich, Grand Duke of Russia; daughter of Leopold, Grand Duke of Baden. 1 Portrait

Olga, Queen of Greece (1851-1926), Consort of George I, King of Greece; daughter of Constantine, Grand Duke of Russia. 5 Portraits

Olga Alexandrovna, Grand Duchess of Russia (1882-1960), Former wife of Peter Alexandrovich, Duke of Oldenburg, and later wife of Nikolai Alexandrovich Kulikovsky; daughter of Alexander III, Emperor of Russia. 2 Portraits

Princess Olga of Hanover and Cumberland (1884-1958), Daughter of Ernest Augustus, Crown Prince of Hanover and 3rd Duke of Cumberland and Teviotdale. 1 Portrait

Olga, Grand Duchess of Russia (1895-1918), Daughter of Nicholas II, Emperor of Russia. 12 Portraits

Olga Romanoff, Princess Romanova (1950-), Daughter of Andrei Aleksandrovich Romanov, Prince of Russia. 1 Portrait

Olga Nikolaevna, Grand Duchess of Russia (later Queen consort of Württemberg) (1822-1892), Queen consort of Charles I, King of Württemberg; daughter of Nicholas I, Emperor of Russia. 1 Portrait

Wallace ('Wally') Olins (1930-2014), Corporate identity and global brand consultant. 1 Portrait

Sir Lancelot Oliphant (1881-1965), Diplomat. 8 Portraits

Laurence Oliphant (1829-1888), Diplomatist and traveller. 1 Portrait

Sir Laurence James Oliphant, 9th of Condie (1846-1914), Soldier. 2 Portraits

Sir Marcus Laurence Elwin ('Mark') Oliphant (1901-2000), Physicist involved in developing the atomic bomb. 7 Portraits

Margaret Oliphant Wilson Oliphant (1828-1897), Novelist and biographer. 3 Portraits

Fernandez Olissiponen (died 1570), Jesuit Missionary. 1 Portrait

Edyth Olive (Mrs Arthur Applin) (1872-1956), Actress. 3 Portraits

Anne Oliver (1593-1672), Wife of Peter Oliver. 1 Portrait

Anne Madeline Bessie Ghislaine Oliver (née Batho) (1938-), Wife of Stephen Robert Morgan Oliver; daughter of Sir Maurice Benjamin Batho, 2nd Bt. 3 Portraits

Anthony Oliver (1923-1995), Actor. 1 Portrait

Dame Beryl Oliver (1882-1972), Charity worker and administrator, Head ofthe Naval and Military Volunteer Aid Detachment. 6 Portraits

Charles Pye Oliver (1861-1951), Physician to the King. 2 Portraits

Sir Craig Stewart Oliver (1969-), News editor, producer and media executive; former Director of Communications for Prime Minister David Cameron. 1 Portrait

Eileen Oliver (née Cowlrick). 1 Portrait

Emma Sophia Oliver (née Eburne) (1819-1885), Landscape painter; wife of William Oliver. 1 Portrait

Sir (Frederick) Ernest Oliver (1900-1994), Chairman of George Oliver (Footwear) Ltd. 2 Portraits

Ethel Oliver (active circa 1903-1933), Actress. 12 Portraits

Sir Geoffrey Nigel Oliver (1898-1980), Admiral. 2 Portraits

George Oliver (1782-1867), Freemason, topographer, writer and rector. 1 Portrait

Sir Henry Francis Oliver (1865-1965), Admiral of the Fleet. 5 Portraits

Isaac Oliver (circa 1565-1617), Miniature painter. 5 Portraits

Jane Oliver (Helen Christina Easson Rees) (1903-1970), Writer. 27 Portraits

Sir John William Lambton Oliver (1873-1952), Deputy Director-General of Equipment and Stores, Admiralty. 3 Portraits

Ken Oliver (1948-), Artist. 2 Portraits

Meriel Edith Milicent Oliver (née Moore) (1936-), Daughter of Sir Alan (Hilary) Moore, 2nd Bt; wife of John Oliver. 3 Portraits

Martha Cranmer ('Pattie') Oliver (1834-1880), Actress. 5 Portraits

Peter Oliver (circa 1589-1647), Miniature painter; eldest son of Isaac Oliver. 4 Portraits

Richard Aldworth Oliver (1811-1889), Admiral. 1 Portrait

Robert Don Oliver (1895-1980), Vice-Admiral. 7 Portraits

Sir Roland Giffard Oliver (1882-1967), Judge of High Court of Justice. 2 Portraits

Sir Thomas Oliver (1852-1942), Physician and industrial hygienist. 1 Portrait

Vic Oliver (1897-1964), Comedian, actor and musician. 1 Portrait

Victor Oliver (1898-1964), Conductor. 1 Portrait

Sir William Pasfield Oliver (1901-1981), Lieutenant-General. 1 Portrait

Miss Oliver (active 1765). 1 Portrait

Mrs Oliver (active 1860s). 1 Portrait

John Oliver-Bellasis (1900-1979), Lieutenant-Colonel, Justice of the Peace and Deputy Lieutenant for Hampshire. 3 Portraits

William Rene Redivivus Oliver de Lorncourt, 'Marquis de Leuville'; poet, adventurer and self-promoter. 1 Portrait

Thomas Olivers (baptised 1725-1799), Methodist preacher and hymn writer. 1 Portrait

Sydney Haldane Olivier, 1st Baron Olivier (1859-1943), Colonial civil servant, politician and author. 6 Portraits

Charles Harold Arthur Olivier (1912-1992), Brigadier and author. 2 Portraits

Dacres Olivier (1831-1919), Rector of Wilton and Canon of Salisbury. 1 Portrait

Edith Olivier (1872-1948), Writer; Mayor of Wilton. 11 Portraits

Emma Selina Olivier (née Eden) (circa 1835-1908), Wife of Dacres Olivier; daughter of Robert Eden. 3 Portraits

Hon. Julie Kate Olivier (1966-), Actress; daughter of Laurence Olivier and Joan Plowright. 1 Portrait

Laurence Kerr Olivier, Baron Olivier (1907-1989), Actor, producer and director. 114 Portraits

Noel Olivier (1892-1969), Doctor. 2 Portraits

Hon. Richard Olivier (1961-), Theatre director; son of Laurence Olivier and Joan Plowright. 2 Portraits

Hon. Tamsin Olivier (1963-), Actress; daughter of Laurence Olivier and Joan Plowright. 1 Portrait

William Herbert Olivier (1904-1992), Lieutenant-Colonel. 11 Portraits

Dame Kathleen Ollerenshaw (née Timpson) (1912-2014), Mathematician, politician and Lord Mayor of Manchester. 1 Portrait

John Sheldon Olliff (1908-1951), Tennis player, author and sportsjournalist. 6 Portraits

Alfred Ollivant (1798-1882), Bishop of Llandaff. 6 Portraits

Martin Spencer Ollivant (1922-2001), Captain, Royal Navy. 1 Portrait

(Olivier) Émile Ollivier (1825-1913), Prime Minister of France. 3 Portraits

Maudie Olmar (1897-1963), Actress. 2 Portraits

Charles Sandford Olmsted (1853-1918), Bishop of Colorado. 1 Portrait

Charles Tyler Olmsted (1842-1924), Bishop of Central New York. 1 Portrait

Sir Colman Michael O'Loghlen, 2nd Bt (1819-1877), Irish lawyer and politician; MP for County Clare. 2 Portraits

Duro Olowu (1965-), Fashion designer. 1 Portrait

Sir William Olpherts (1822-1902), Army officer. 1 Portrait

Olaf Olsen (1919-2000), Actor. 1 Portrait

Julius Olsson (1864-1942), Marine painter. 5 Portraits

Isaac Oluwole (1852-1932), Assistant Bishop of Lagos. 1 Portrait

Pierce Charles de Lacy O'Mahony (né Mahony) (1850-1930), Politician and philanthropist. 1 Portrait

C. O'Malley. 1 Portrait

Sir Edward Loughlin O'Malley (1842-1932), Judge. 1 Portrait

Ellen O'Malley (died 1961), Actress. 1 Portrait

George O'Malley (1780-1843), Major-General. 1 Portrait

Mary O'Malley. 2 Portraits

Sir Owen St Clair O'Malley (1887-1974), British ambassador to Poland and Portugal. 8 Portraits

Tony O'Malley (1913-2003), Painter. 2 Portraits

William O'Malley (1853-1939), Politician and journalist. 7 Portraits

William Joseph O'Malley (1892-1917), Accountant and army officer; son of William O'Malley. 2 Portraits

Qaboos Bin Said Al Said, Sultan of Oman (1940-), Reigned 1970-. 1 Portrait

Charles Oman (died 1825), Vintner's boy. 1 Portrait

Sir Charles William Chadwick Oman (1860-1946), Professor of Modern History at Oxford University, military historian and Conservative politician; MP for Oxford University. 8 Portraits

John Wood Oman (1860-1939), Theologian. 1 Portrait

Sir David Bruce Omand (1947-), Visiting Professor, King’s College London, Security and Intelligence Co-ordinator and Permanent Secretary, Cabinet Office. 1 Portrait

Kate O'Mara (1939-), Actress. 1 Portrait

Sir Muda Omar 'Ali Saifuddien Sa'adul Khairi Waddien, Sultan of Brunei (1914-1986), Sultan of Brunei. 9 Portraits

Yohana Majani Omari (active 1950s), Assistant Bishop of Central Tanganyika. 1 Portrait

Joan Cowell O'Meara (née Ridley) (1903-1983), Tennis player; wife of Daniel Joseph Patrick O'Meara. 5 Portraits

Charles Vernon Ommanney (1872-1952), Lieutenant-Colonel, Indian Army. 2 Portraits

Edward Aislabie Ommanney (circa 1807-1884), Clergyman. 1 Portrait

Sir Erasmus Ommanney (1814-1904), Admiral. 1 Portrait

Francis Downes Ommanney (1903-1980), Marine Biologist. 4 Portraits

Honoria Catherine Ommanney (née Lawrence), Wife of Charles Vernon Ommanney. 2 Portraits

Sir John Acworth Ommanney (1773-1855), Admiral. 3 Portraits

Thomas Arthur O'Mullally (Count Lally de Tolendal) (1702-1766), Soldier. 2 Portraits

Johann Gerhard Oncken (1800-1884), Baptist preacher. 1 Portrait

Michael Ondaatje (1943-), Writer. 1 Portrait

Sir (Philip) Christopher Ondaatje (1933-), Financier, writer, philanthropist and patron of the arts. 3 Portraits

Catherine Maria O'Neal (died 1796), Actress; third wife of Charles Lee Lewes. 1 Portrait

Charlie O'Neale (1978-), Model. 1 Portrait

Alexander Henry O'Neil (1907-1997), Bishop of Fredericton, Canada. 1 Portrait

Henry Nelson O'Neil (1817-1880), Painter. 3 Portraits

Peggy O'Neil (Margaret O'Neil) (1894-1960), Actress and singer. 6 Portraits

Charles Henry St John O'Neill, Earl O'Neill (1779-1841), Landowner. 1 Portrait

Onora Sylvia O'Neill, Baroness O'Neill of Bengarve (1941-), Philosopher, writer and academic. 2 Portraits

Georgina Mary (née Montagu Douglas Scott), Lady O'Neill (1940-), Wife of 4th Baron O'Neill; daughter of Lord George Francis John Montagu Douglas Scott. 6 Portraits

Charles O'Neill (1849-1918), Irish politician. 1 Portrait

Sir Con Douglas Walter O'Neill (1912-1988), Foreign Office ambassador. 2 Portraits

Hon. (Louisa) Henrietta Valdivia O'Neill (1879-1965), Daughter of 2nd Baron O'Neill; wife of Charles Edward Norman Leith-Hay. 10 Portraits

Herbert Charles O'Neill (1879-1953), Journalist and editor. 1 Portrait

John O'Neill (1778-1858), Shoemaker, poet and author. 1 Portrait

John Stephen Lanchester O'Neill (died 1969), Colonel. 1 Portrait

Norman O'Neill (1875-1934), Composer. 1 Portrait

Sir Phelim O'Neill (1604?-1653), Irish rebel. 2 Portraits

Robert John O'Neill (1936-), Academic, war historian and strategist. 1 Portrait

Terry O'Neill (1938-2019), Photographer. 2 Portraits

Charles Talbut Onions (1873-1965), Lexicographer and grammarian. 1 Portrait

(George) Oliver Onions (1873-1961), Novelist. 2 Portraits

Yoko Ono (1933-), Artist, musician and activist; second wife of John Lennon. 14 Portraits

Bunty O'Nolan (active 1926), Actress. 4 Portraits

George Onslow, 1st Earl of Onslow (1731-1814), Politician; MP for Surrey. 3 Portraits

Thomas Onslow, 2nd Earl of Onslow (1754-1827), Eldest son of George Onslow, 1st Earl of Onslow. 1 Portrait

William Hillier Onslow, 4th Earl of Onslow (1853-1911), Governor of New Zealand. 10 Portraits

Richard William Alan Onslow, 5th Earl of Onslow (1876-1945), Diplomat and Civil Servant. 6 Portraits

Violet Marcia Catherine Warwick (née Bampfylde), Countess of Onslow (died 1954), Wife of 5th Earl of Onslow; daughter of 3rd Lord Poltimore. 1 Portrait

William Arthur Bampfylde Onslow, 6th Earl of Onslow (1913-1971), Soldier and Assistant Chief Whip. 1 Portrait

Richard Onslow, 1st Baron Onslow (1654-1717), Speaker of the House of Commons. 5 Portraits

Lady June Ann Onslow (née Hay) (1932-2002), Wife of Baron Onslow of Woking; daughter of 14th Earl of Kinnoull. 5 Portraits

Lady Mary Florence Violet Margaret Onslow (Lady Garside) (1908-1970), Former wife of George Garside; daughter of 5th Earl of Onslow. 6 Portraits

Arthur Onslow (1691-1768), Speaker of the House of Commons. 13 Portraits

Arthur Onslow (1746-1817), Dean of Worcester. 1 Portrait

Denzil Roberts Onslow (1839-1908), Conservative politician; MP for Guildford. 1 Portrait

Frank Herbert Onslow (1899-1970), Son of M.R.S. Onslow. 9 Portraits

George Onslow (1731-1792), Politician, army officer and nephew of Arthur Onslow. 1 Portrait

Guildford James Hillier Onslow (1814-1882), Politician; MP for Guildford. 4 Portraits

Hon. (Victor Alexander Herbert) Huia Onslow (1890-1922), Biochemist; son of 4th Earl of Onslow. 2 Portraits

Hon. Lena Barbara Joan Onslow (née Ogilvie-Grant) (1907-1981), Wife of Frank Herbert Onslow; daughter of Trevor Ogilvie-Grant, 4th Baron Strathspey. 27 Portraits

Maud Onslow, Hair stylist. 2 Portraits

Richard Onslow (1527 or 1528-1571), Lawyer and Speaker of the House of Commons. 1 Portrait

Sir Richard Onslow, Bt (1741-1817), Admiral. 3 Portraits

Sir Richard George Onslow (1904-1975), Admiral. 1 Portrait

Roger Cranley Seafield Onslow (1935-), Son of Frank Herbert Onslow. 6 Portraits

Chinyelu ('Chi') Susan Onwurah (1965-), Labour politician; MP for Newcastle-upon-Tyne Central. 1 Portrait

Gourishanker Oodeshanker (1805-1892), Indian administrator. 1 Portrait

Lady Susan Harriet Catherine Opdebeck (née Douglas-Hamilton) (1814-1889), Figure of scandal. 1 Portrait

W. Openshaw. 1 Portrait

Amelia Opie (1769-1853), Novelist and poet; second wife of John Opie. 8 Portraits

Evelyn Arnold Opie (1905-1990), Matron of King's College Hospital. 3 Portraits

Iona Margaret Balfour Opie (1923-2017), Folklorist. 1 Portrait

John Opie (1761-1807), Portrait and history painter. 13 Portraits

Julian Opie (1958-), Artist. 1 Portrait

Mary Opie (née Bunn) (active 1782-1795), First wife of John Opie; later wife of Major Edwards. 1 Portrait

William Alfred Opie (1901-1977), Air Vice-Marshal. 1 Portrait

Nevada, Duchess of Oporto (1885-1941), Wife of Prince Alfonso of Braganza, Duke of Oporto. 1 Portrait

Julie Opp (Mrs William Faversham) (1871-1921), Actress. 2 Portraits

Adolph Paul Oppé (1878-1957), Art historian and art collector. 2 Portraits

Lady Bridget Sarah Oppenheim (née Sinclair) (1947-), Wife of Nicholas Anthony Oppenheim; daughter of 19th Earl of Caithness. 2 Portraits

Sir Duncan Morris Oppenheim (1904-2003), Businessman, artist and arts administrator. 1 Portrait

Edward Phillips Oppenheim (1866-1946), Novelist. 13 Portraits

Elsie Clara Oppenheim (née Hopkins) (died 1946), Wife of Edward Phillips Oppenheim. 2 Portraits

Mrs O. Oppenheim. 1 Portrait

Sally Oppenheim-Barnes, Baroness Oppenheim-Barnes (1928-), Social worker and Conservative politician; MP for Gloucester. 3 Portraits

Michael Bernard Grenville Oppenheimer, 3rd Baron Oppenheimer (1924-), University lecturer in politics. 3 Portraits

(Laetitia) Helen (née Munro-Lucas-Tooth), Lady Oppenheimer (1926-2022), Writer on moral and philosophical theology; wife of Sir Michael Oppenheimer, 3rd Bt; daughter of Sir Hugh Munro-Lucas-Tooth, 1st Bt. 14 Portraits

Mrs Louis Oppenheimer. 5 Portraits

Max Ophuls (né Max Oppenheimer) (1902-1957), Film director. 2 Portraits

Sir Hubert Ferdinand Opperman (1904-1996), Australian cyclist. 1 Portrait

Alison Opyrchal, Archive Assistant, National Portrait Gallery. 1 Portrait

Albert Edward Oram, Baron Oram (1913-1999), Politician and teacher. 1 Portrait

Edward Oram (active 1766-1799), Landscape painter. 1 Portrait

James Oram, Cloakroom Attendant, House of Commons. 1 Portrait

Sir Matthew Henry Oram (1885-1969), Barrister. 1 Portrait

Walter Charles Oram (circa 1875-1927), Physician. 1 Portrait

Frederick Henry, Prince of Orange, Count of Nassau (1584-1647), Prince of Orange. 16 Portraits

Amalia of Solms-Braunfels (1602-1675), Wife of Frederick Henry, Prince of Orange. 3 Portraits

Sir Hugh William Orange (1866-1956), Educationist. 2 Portraits

Jason Orange (1970-), Musician; dancer and singer for Take That. 1 Portrait

Miss Orange (active 1860). 1 Portrait

Dominick Browne, 1st Baron Oranmore and Browne (1787-1860), Politician; MP for County Mayo. 1 Portrait

Christina (née Guthrie), Lady Oranmore and Browne (1834-1887), Wife of 2nd Baron Oranmore and Browne; daughter of Alexander Guthrie. 1 Portrait

Geoffrey Henry Browne, 3rd Baron Oranmore and Browne (1861-1927), Irish politician. 9 Portraits

Olwen Verena (née Ponsonby), Lady Oranmore and Browne (1876-1927), Wife of 3rd Baron Oranmore and Browne; daughter of 8th Earl of Bessborough. 6 Portraits

Dominick Geoffrey Edward Browne, 4th Baron Oranmore and Browne (1901-2002), Son of 3rd Baron Oranmore and Browne. 7 Portraits

Mildred Helen (née Egerton), Lady Oranmore and Browne (later Hon. Mrs Dalrymple) (1903-1980), First wife of 4th Baron Oranmore and Browne. 3 Portraits

Maurice Orbach (1902-1979), Labour politician; MP for Willesden East and Stockport South. 14 Portraits

Roy Kelton Orbison (1936-1988), Singer and songwriter. 1 Portrait

William Orbit (1956-), Musician, composer and record producer. 1 Portrait

Sir George Orby Wombwell, 4th Bt (circa 1833-1913), Soldier and landowner. 1 Portrait

Bill Orchard (1940-), Photographer. 1 Portrait

Henry Ben Orchard (died 1937), Chief Accountant of the Bank of England. 2 Portraits

Paul Orchard (1739-1812), Politician and Colonel of the Northern Regiment of the Devon militia. 1 Portrait

Robert Orchard (circa 1783-active 1804), Grocer and tea dealer in Soho. 1 Portrait

William Edwin Orchard (1877-1955), Roman Catholic priest and theologian. 1 Portrait

Ellen (née Moxon), Lady Orchardson (circa 1854-1917), Wife of Sir William Quiller Orchardson; daughter of Charles Moxon. 1 Portrait

Sir William Quiller Orchardson (1832-1910), Portrait and subject painter. 19 Portraits

Baroness Emma Magdalena Rosalia Maria Josefa Barbara Orczy (1865-1947), Novelist. 9 Portraits

Boris Ord (1897-1961), Organist, composer and choirmaster. 1 Portrait

William Ord (1781-1855), Politician; MP for Morpeth and Newcastle-upon-Tyne. 2 Portraits

Lady Eileen Orde (née Wellesley) (1887-1952), Artist; wife of Cuthbert Julian Orde; daughter of 4th Duke of Wellington. 8 Portraits

Jane Orde (1921-1995), Daughter of Cuthbert Julian Orde. 4 Portraits

Sir John Orde, Bt (1751-1824), Naval officer and politician. 1 Portrait

Julian Orde (1917-1974), Daughter of Cuthbert Julian Orde. 4 Portraits

Sir Julian Walter Orde (1861-1929), Chairman and Secretary of the Royal Automobile Club. 1 Portrait

Margaret Florence (née Fearnley-Whittingstall), Lady Orde Browne (died 1978), Wife of Sir Granville St John Orde Browne. 7 Portraits

Jean Ordner, Managing Director, Renault. 1 Portrait

Miriam O'Reilly (1957-), Television presenter. 1 Portrait

Montagu Frederick O'Reilly (1822-1888), Rear-Admiral. 2 Portraits

Max O'Rell (1848-1903), Author, traveller and lecturer. 1 Portrait

Edward Russell, Earl of Orford (1652-1727), Admiral. 14 Portraits

Robert Walpole, 1st Earl of Orford (1676-1745), Prime Minister. 27 Portraits

Robert Walpole, 2nd Earl of Orford (1701-1751). 1 Portrait

George Walpole, 3rd Earl of Orford (1730-1791), Rake and eccentric. 6 Portraits

Horatio ('Horace') Walpole, 4th Earl of Orford (1717-1797), Writer and collector. 20 Portraits

Horatio Walpole, 1st Earl of Orford (1723-1809). 2 Portraits

Horatio Walpole, 2nd Earl of Orford (1752-1822). 1 Portrait

Horatio William Walpole, 4th Earl of Orford (1813-1894), Landowner. 2 Portraits

Louise Melissa Walpole (née Corbin), Countess of Orford (died 1909), Daughter of D.C. Corbin; first wife of 5th Earl of Orford. 15 Portraits

Emily Gladys Walpole (née Oakes), Countess of Orford (active 1917), Second wife of 5th Earl of Orford; daughter of Thomas Henry Royal Oakes. 11 Portraits

Harriet Bettina Frances (née Pellew), Countess of Orford (1820-1886), Wife of 4th Earl of Orford; daughter of Sir Fleetwood Broughton Reynolds Pellew. 1 Portrait

Bryan Organ (1935-), Painter. 6 Portraits

John Foster, 1st Baron Oriel (1740-1828), Speaker of the Irish House of Commons. 1 Portrait

Cait O'Riordan (1965-), Bass guitarist; wife of Elvis Costello. 1 Portrait

Mary (née O'Brien), Countess of Orkney (1755-1831), Daughter of 1st Marquess of Thomond and 3rd Countess of Orkney. 2 Portraits

Constance ('Connie') (née Gilchrist), Countess of Orkney (1864-1946), Actress, dancer and artists' model; wife of 7th Earl of Orkney. 14 Portraits

George Hamilton, 1st Earl of Orkney (1666-1737), Army officer. 5 Portraits

Charlotte Isabella (née Irby), Countess of Orkney (1807-1883), Wife of 5th Earl of Orkney; daughter of 3rd Baron Boston. 2 Portraits

Vittorio Emanuele Orlando (1860-1952), Prime Minister of Italy. 2 Portraits

Amélie Marie ('Maria Amélia') Louise Hélène of Orléans, Queen of Portugal (1865-1951), Queen consort of Carlos I, King of Portugal. 12 Portraits

Eugene Adelaide Louise d'Orleans (1777-1847), Daughter of Louis Philippe II d'Orleans. 1 Portrait

Princess Marie Clementine Caroline Leopoldine d'Orleans (1817-1907), Daughter of Louis Philippe I; mother of Ferdinand I, Tsar of Bulgaria. 2 Portraits

Augustus Henry Orlebar (1897-1943), RAF officer; World War I flying ace. 1 Portrait

Faith Orlebar (née Bourne) (1867-1951), Diarist; wife of Richard Rouse Boughton Orlebar. 1 Portrait

Michel Fedorowitsch Orloff (died 1861), Russian general. 1 Portrait

Count Serge Orloff-Davidoff (died 1945), Foreign dignitary; husband of Hon. Elizabeth Scott-Ellis. 2 Portraits

Count Grigorii Grigorievich Orlov (1734-1783), Russian statesman. 1 Portrait

Count Alexis Grigorievich Orlov-Tchesmensky (1734-1808), Russian statesman. 1 Portrait

John Benn-Walsh, 1st Baron Ormathwaite (1798-1881), Politician and pamphleteer. 1 Portrait

Jane Benn-Walsh (née Grey), Lady Ormathwaite (1803-1877), Wife of John Benn-Walsh, 1st Baron Ormathwaite. 1 Portrait

Arthur Walsh, 2nd Baron Ormathwaite (1827-1920), Landowner and politician. 4 Portraits

Katherine Emily Mary (née Somerset), Lady Ormathwaite (1834-1914), Wife of 2nd Baron Ormathwaite; daughter of 7th Duke of Beaufort. 1 Portrait

Arthur Henry John Walsh, 3rd Baron Ormathwaite (1859-1937), Politician and Lord-Lieutenant and President of the Territorial Force, County of Radnor. 3 Portraits

Frank Leslie Orme (1898-1968), Lieutenant-Colonel, Director of Royal Insurance Co. Lt and High Sheriff of Cheshire. 2 Portraits

Malcolm Orme (circa 1805-1878), Proctor. 1 Portrait

Robert Orme (1728-1801), Historian of India and East India Company servant. 1 Portrait

Thomas Orme (active 1688), Soldier and one of the 'Portsmouth Captains' cashiered in 1688. 3 Portraits

Orme. 1 Portrait

Sir (Cyril) Berkeley Ormerod (1897-1983), Major and Director of Public Relations for the British Information Services, New York. 3 Portraits

Eleanor Anne Ormerod (1828-1901), Entomologist. 1 Portrait

George Ormerod (1785-1873), County historian. 1 Portrait

Agnes Lucy Ormiston (née Benniworth) (died 1942), Wife of Thomas Lane Ormiston. 3 Portraits

Thomas Lane Ormiston (1867-1954), Lieutenant-Colonel and Justice of the Peace. 2 Portraits

Julia Karin Ormond (1965-), Actress. 1 Portrait

Leonée Ormond (née Jasper) (1940-), Art historian. 1 Portrait

Marguerite Ormond (born 1892), John Singer Sargent's niece. 2 Portraits

Marie Marguerite Renet Ormond (1847-1925), Mother-in-law to John Singer Sargent's sister Violet Ormond (née Sargent). 1 Portrait

Richard Louis Ormond (1939-), Art historian; Director of the National Maritime Museum. 8 Portraits

James Butler, 9th Earl of Ormond and Ossory (1504-1564), Soldier. 1 Portrait

James Butler, 1st Duke of Ormonde (1610-1688), Statesman and royalist soldier; commander of the royalist forces in Ireland. 17 Portraits

James Butler, 2nd Duke of Ormonde (1665-1745), Soldier and Jacobite. 28 Portraits

Mary Butler (née Somerset), Duchess of Ormonde (1665-1733), Lady of the Bedchamber and second wife of 2nd Duke of Ormonde. 11 Portraits

John Butler, 2nd Marquess of Ormonde (1808-1854). 2 Portraits

James Edward William Theobald Butler, 3rd Marquess of Ormonde (1844-1919), Landowner. 6 Portraits

Elizabeth Harriet (née Grosvenor), Marchioness of Ormonde (1856-1928), Wife of 3rd Marquess of Ormonde; daughter of 1st Duke of Westminster. 3 Portraits

James Arthur Wellington Foley Butler, 4th Marquess of Ormonde (1849-1943), State Steward to Earl of Canarvon when Viceroy of Ireland. 3 Portraits

James George Anson Butler, 5th Marquess of Ormonde (1890-1949), Major. 5 Portraits

Frances Susan Elizabeth ('Anne') (née Wandesford), Countess of Ormonde (1754-1830), Wife of 17th Earl of Ormonde; daughter of 1st Earl Wandesford. 1 Portrait

Peter Charles Ormrod (1922-2007), Colonel. 9 Portraits

Sir Roger Fray Greenwood Ormrod (1911-1992), Lord Justice of Appeal. 1 Portrait

Emmeline Ormsby (active 1880s), Actress. 1 Portrait

George Albert Ormsby (1843-1924), Bishop of Honduras and Central America. 1 Portrait

George Frederick Ormsby (1838-1901), Captain, 2nd Dragoon Guards; son of 4th Marquess of Londonderry and Giulia Grisi. 3 Portraits

Hon. Seymour Fitzroy Ormsby-Gore (1863-1950), Stockbroker and politician; son of 2nd Baron Harlech. 2 Portraits

William Ormsby-Gore (1779-1860), Politician and great-great grandfather of William Ormsby-Gore, 4th Baron Harlech. 1 Portrait

Frederick Charles O'Rorke (1879-1976), Soldier and Government Veterinary Officer. 3 Portraits

Martin O'Rourke (active early 19th century), Swimmer. 1 Portrait

Egon Orowan (1902-1989), Mechanical Engineer; Professor of Mechanical Engineering. 4 Portraits

Raymond d'Audemar Orpen (1837-1930), Bishop of Limerick. 1 Portrait

Sir William Orpen (1878-1931), Painter, Royal Academician. 28 Portraits

Edward Orpin (died 1781), Parish clerk. 1 Portrait

Sir Alan Stewart Orr (1911-1991), Judge, Lord Justice of Appeal. 2 Portraits

Alexandra Sutherland Orr (née Leighton) (1828-1903), Biographer of Robert Browning; sister of Lord Leighton. 1 Portrait

Sir Charles William James Orr (1870-1945), Colonial governor. 4 Portraits

Christopher John ('Chris') Orr (1943-), Artist; Professor and Course Director of Printmaking at the Royal College of Art. 3 Portraits

John Orr (1874-1938), Bishop of Meath and Bishop of Tuam. 1 Portrait

John Orr (1885-1966), Linguist and French scholar. 1 Portrait

Patricia Orr (née Morris) (died 1854), Sister of Sophia Finlay. 1 Portrait

Robert Kemsley ('Robin') Orr (1909-2006), Composer and Professor of Music. 1 Portrait

Carolina Alexina Orred (née Lane-Fox) (1845-1924), Wife of John Cavendish Orred; daughter of George Lane-Fox. 1 Portrait

John Cavendish Orred (1841-1905), Landowner and army officer. 1 Portrait

Matilda Orred (née Thistlethwayte) (died 1879), Wife of George Orred; daughter of Thomas Thistlethwayte. 1 Portrait

M. Orred, Daughter of George Orred. 1 Portrait

Charles Boyle, 4th Earl of Orrery (1674-1731), Soldier and scholar. 3 Portraits

(Charles) Ian Orr-Ewing, Baron Orr-Ewing (1912-1999), Company director, consultant and politician. 13 Portraits

Lady Margaret Frances Susan Orr-Ewing (née Innes-Ker) (1875-1930), Wife of James Alexander Orr-Ewing; daughter of 7th Duke of Roxburghe. 1 Portrait

Sir Ian Leslie Orr-Ewing (1893-1958), Politician; MP for Weston-super-Mare. 7 Portraits

Sir Norman Archibald Orr Ewing, 4th Bt (1880-1960), Brigadier-General. 4 Portraits

Ronald Archibald Orr-Ewing (1912-2002). 2 Portraits

Ellen Amelia Orridge (1856-1883), Singer. 1 Portrait

Doris Blanche Orr (née Lee), Lady Orr-Lewis, Former wife of Sir Walter Gibbons, and later wife of Sir John Duncan Orr-Lewis, 2nd Bt; daughter of Charles Lee. 3 Portraits

James Orrock (1829-1913), Painter and art collector. 4 Portraits

Albert William Thomas Orsborn (1886-1967), General of the Salvation Army. 3 Portraits

Phillis Higgins Orsborn (née Higgins) (1891-1986), Leader of the Salvation Army Women's social work in Britain; former wife of Bramwell Taylor and later third wife of Albert William Thomas Orsborn; daughter of Edward John Higgins. 2 Portraits

Count Felice Orsini (1819-1858), Italian revolutionary. 1 Portrait

Christopher Orssich (1947-), Son of Count Robert Orssich. 1 Portrait

Paul Orssich, Son of Count Robert Orssich. 1 Portrait

Rosemary Gladys (née Henderson), Countess Orssich (died 1984), Wife of Count Robert Orssich; daughter of Sir Murrough John Wilson. 1 Portrait

Abraham Ortelius (Ortels) (1527-1598), Cartographer, geographer and creator of the first modern atlas. 1 Portrait

René Ortmans (1863-1949), Violinist. 1 Portrait

Arthur Orton (1834-1898), The Tichborne Claimant. 24 Portraits

Beth Orton (1970-), Singer. 3 Portraits

Charles Orton (active circa 1873), Brother of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

Sir Ernest Frederick Orton (1874-1960), Major-General. 1 Portrait

George Orton (active circa 1873), Shipping butcher, father of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

James Herbert Orton (1884-1953), Zoologist. 1 Portrait

Job Orton (1717-1783), Dissenting minister. 1 Portrait

John Kingsley ('Joe') Orton (1933-1967), Playwright. 13 Portraits

Mary Orton (active circa 1873), Mother of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

Mary Ann Orton (née Bryant) (1844-1926), Wife of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

George Orwell (Eric Arthur Blair) (1903-1950), Novelist and critic. 1 Portrait

Charles Stewart Orwin (1876-1955), Agricultural economist and historian. 2 Portraits

George Osbaldeston (1787-1866), Sportsman and eccentric. 3 Portraits

David Webster Osbaldiston (1794-1850), Actor. 1 Portrait

Sir Algernon Kerr Butler Osborn, 7th Bt (1870-1948), Justice of the Peace and major. 2 Portraits

Beatrice Elliot Kennard (née Greenfield), Lady Osborn (1875-1963), Wife of Sir Algernon Osborn, 7th Bt; daughter of William Bunce Greenfield. 2 Portraits

Hon. Charlotte Jane Osborn (née Kenyon) (1843-1893), Wife of George Montagu Osborn; daughter of 3rd Baron Kenyon. 1 Portrait

Constance Violette (née Rooke), Lady Osborn (died 1988), Justice of the Peace; wife of Sir Danvers Osborn, 8th Bt; daughter of Leonard Frank Rooke. 6 Portraits

Franz Osborn (1905-1955), Pianist. 1 Portrait

Sir Frederick James Osborn (1885-1978), Town and County Planner. 6 Portraits

Guy Osborn. 5 Portraits

Sir John Holbrook Osborn (1922-2015), Technical director, Samuel Osborn & Company and Conservative politician; MP for Sheffield Hallam. 1 Portrait

Samuel Osborn (1848-1936), Surgeon and Commissioner of the City Boy Scouts. 1 Portrait

Sir Samuel Osborn (1864-1952), Director of Samuel Osborn and Company Ltd. 1 Portrait

Shane Osborn (1970-), Chef. 1 Portrait

Sherard Osborn (1822-1875), Rear-Admiral and writer. 4 Portraits

Sue Osborn, Joint Chief Executive, National Patient Safety Agency. 1 Portrait

William Lushington Osborn (1871-1951), Brigadier-General. 4 Portraits

Lady Olga Katherine Godolphin Osborne (1886-1929), Daughter of 10th Duke of Leeds. 1 Portrait

Lord Sydney Godolphin Osborne (1808-1889), Philanthropist; son of 1st Baron Godolphin. 2 Portraits

Lord William Henry Osborne (1691-1711), Son of 2nd Duke of Leeds. 2 Portraits

Alexander Osborne (circa 1756-circa 1830), Royal Edinburgh Volunteer, Inspector-General and Solicitor of Customs. 2 Portraits

Sir Cyril Osborne (1898-1969), Politician; Justice of the Peace. 14 Portraits

Edmund Archibald Osborne (1885-1969), Lieutenant-General. 2 Portraits

Edward Oliver Brudenell Seymour Osborne (1883-1956), Vice-Admiral. 5 Portraits

Edward William Osborne (1845-1926), Bishop of Springfield, Illinois. 1 Portrait

Elsie Osborne (née Gregory) (1877-1938), Miniature painter; sister of Yvonne Gregory. 1 Portrait

Emma Laura Osborne (née Shoubridge) (1835 or 1836-1905), Wife of John William Willoughby Osborne; daughter of Charles John Shoubridge. 2 Portraits

George Osborne (1971-), Politician; Chancellor of the Exchequer. 1 Portrait

John James Osborne (1929-1994), Playwright, autobiographer and actor. 21 Portraits

John Howe Osborne (1833-1922), Jockey and trainer. 4 Portraits

John William Willoughby Osborne (1833-1881), Army officer and colonial civil servant. 3 Portraits

Kathleen Eliza (née Whitfield), Lady Osborne (died 1953), Wife of Sir Francis Osborne; daughter of George Whitfield. 1 Portrait

Leslie Bartlet Osborne (1900-1989), Surgeon Rear-Admiral. 1 Portrait

Malcolm Osborne (1880-1963), Engraver and teacher. 2 Portraits

Primrose Osborne (née Salt) (1915-2005), Debutante; wife of Anthony Osborne; daughter of H.F. Salt. 5 Portraits

Ralph Bernal Osborne (1808?-1882), Liberal politician; First Secretary of the Admiralty. 7 Portraits

Rosabelle Osborne (died 1958), Matron-in-Chief. 3 Portraits

Thomas Osborne (1853-1920), Jockey. 1 Portrait

William Godolphin Osborne (1804-1899), Military secretary to the Governor General of India. 1 Portrait

Osborne. 1 Portrait

(Samuel) Lloyd Osbourne (1868-1947), Novelist; stepson of Robert Louis Stevenson. 2 Portraits

John Michael ('Ozzy') Osbourne (1948-), Singer and songwriter. 1 Portrait

Oscar II, King of Sweden (1829-1907), Reigned 1872-1907. 4 Portraits

Osgood. 1 Portrait

Patrick Joseph O'Shaughnessy (1872-1920), Politician; MP for West Limerick. 3 Portraits

Tessie O'Shea (1914-1995), Singer and comedian. 9 Portraits

William Henry O'Shea (1840-1905), Irish politician. 1 Portrait

Prince Oskar of Prussia (1888-1958), Son of Wilhelm II, Emperor of Germany and King of Prussia. 1 Portrait

Sir William Osler, 1st Bt (1849-1919), Regius Professor of Medicine at Oxford. 1 Portrait

Saleh bin Osman (1871-1892), Traveller and translator. 1 Portrait

Hugh Edward Mark Osmond (1962-), Businessman. 1 Portrait

Miss Osmond, Actress. 1 Portrait

Elizabeth Sylvia Neville Osmond-Smith (née Moss) (1923-2014), Officer, Women's Naval Service; Wife of Francis Howard Osmond-Smith; daughter of Kenneth Neville Moss. 3 Portraits

Francis Howard Osmond-Smith (died 2002), Captain. 2 Portraits

Reska Fromatt Ospovat (Mrs Wells) (died 1952), Sister of Henry Ospovat. 2 Portraits

Ferdynand Antoni Ossendowski (1876-1945), Polish writer, explorer and anti-Communist political activist. 1 Portrait

Mrs Ferdynand Antoni Ossendowski, Wife of Ferdynand Antoni Ossendowski. 1 Portrait

(John) Evelyn Denison, 1st Viscount Ossington (1800-1873), Speaker of the House of Commons. 13 Portraits

Charlotte (née Cavendish-Bentinck), Viscountess Ossington (1806-1889), Daughter of 4th Duke of Portland; wife of 1st Viscount Ossington. 1 Portrait

Thomas Butler, Earl of Ossory (1634-1680), Courtier and man of action. 5 Portraits

Aemilia Butler (née van Nassau), Countess of Ossory (1635-1688), Dutch-Anglo Courtier; wife of 6th Earl of Ossory. 1 Portrait

Charles Bennet, Lord Ossulston (1850-1879), Lieutenant, Rifle Brigade; son of 6th Earl of Tankerville. 1 Portrait

Count Ivan Andreyevich Osterman (1725-1811), Russian diplomat. 1 Portrait

Anna Oston (active 1588), Catholic émigré. 1 Portrait

Isidore Ostrer (1889-1975), Poet, financier and economist. 27 Portraits

Denis O'Sullivan (1868-1908), Actor and singer. 1 Portrait

Frank O'Sullivan (1937-), Boxing coach. 1 Portrait

Gerard O'Sullivan (1964-2018), Chef; Chef, Olympic Village, London 2012. 1 Portrait

James O'Sullivan (1834-1915), Bishop of Tuam. 1 Portrait

Maureen O'Sullivan (1911-1998), Film actress. 5 Portraits

Oenone Venetia O'Sullivan (née Carew) (1929-2008), Presenter, scriptwriter and producer at RTÉ Radio; wife of John O'Sullivan; daughter of Sir Thomas Palk Carew, 10th Bt. 3 Portraits

Raymond Edward ('Gilbert') O'Sullivan (1946-), Singer-songwriter. 1 Portrait

Ronnie O'Sullivan (1975-), Snooker player. 2 Portraits

Lady Mary Oswald (née Kennedy) (1799-1886), Wife of Richard Oswald; daughter of 1st Marquess of Ailsa. 1 Portrait

Alexander Oswald. 3 Portraits

Countess Mari-Ann von Oswald (née von Bismarck) (1929-1981), Daughter of Otto Christian Archibald, Prince von Bismarck-Schonhausen; wife of Egbert von Oswald. 12 Portraits

Maude Oswald (née Smith-Barry) (died 1936), Wife of Richard Alexander Oswald; daughter of James Hugh Smith-Barry. 2 Portraits

Oswald Charles Williamson Oswald (1863-1938), Brigadier-General. 2 Portraits

Richard Alexander Oswald (1771-1841), Liberal politician: MP for Ayrshire. 1 Portrait

Oswald. 1 Portrait

Ljubica Otaševic (1933-1998), Exotic night-club dancer and actress. 1 Portrait

Carolina Otéro (1868-1965), Dancer and actress, known as 'La Belle Otéro'. 3 Portraits

Caroline Otero (Agustina del Carmen Otero Iglesias) (1868-1965), 'La Belle Otero'; Spanish actress, dancer and courtesan. 3 Portraits

Lisandro Otero González (1932-2008), Cuban novelist and journalist. 2 Portraits

Salvius Otho (32-69), Emperor of Rome. 1 Portrait

Arthur O'Toole (born 1538), Soldier of fortune. 1 Portrait

Kate O'Toole (1960-), Actress; daughter of Peter O'Toole and Siân Phillips. 4 Portraits

Mark O'Toole (1964-), Musician; bassist for Frankie Goes To Hollywood. 3 Portraits

Patricia O'Toole (1963-), Daughter of Peter O'Toole and Siân Phillips. 1 Portrait

Peter O'Toole (1932-2013), Actor. 13 Portraits

Otori Keisuke (1833-1911), Japanese army commander. 1 Portrait

Mrs Frank Otter, Foreign visitor. 1 Portrait

Hugh Van Lynden Otter-Barry (1887-1971), Bishop of Mauritius. 4 Portraits

(Richard) Bruce Hamilton Ottley (1890-1947), Banker; supporter and connoisseur of music and the ballet; Chairman of the United Kingdom Gas Corporation. 3 Portraits

Fielding Hay Ottley (1877-1958), Hon. Canon of Canterbury. 1 Portrait

Otto, Gardener; Men's room attendant. 1 Portrait

Otto von Habsburg, Archduke of Austria (1912-2011), Eldest son of Charles I of Austria; politician. 3 Portraits

Otto, King of Greece (1815-1867), Son of King Louis I of Bavaria. 2 Portraits

Sir Arthur John Otway, 3rd Bt (1822-1912), Politician. 1 Portrait

Eliza Price Noble (née Campbell), Lady Otway (later Mrs Leathem) (1830-1910), Former wife of Sir George Graham Otway, 2nd Bt, and later wife of Thomas William Crawford Leathem; daughter of John Campbell. 10 Portraits

Sir George Graham Otway, 2nd Bt (1816-1881), Naval officer. 1 Portrait

Grace Otway (died 1935), Actress. 2 Portraits

Sir Robert Waller Otway, 1st Bt (1770-1846), Admiral. 1 Portrait

Sarah Otway (née Hayes) (1734-1798), Wife of Francis Otway of Riverhill, Kent; mother of Sarah Mayne (née Otway). 2 Portraits

Thomas Otway (1652-1685), Dramatist. 9 Portraits

Mrs Otway (active late 18th century). 1 Portrait

Nicholas Oudart (died 1681), Secretary to Sir Edward Walker, Garter King of Arms. 1 Portrait

Vizier of Oudh. 1 Portrait

Nicolas Charles Oudinot, duc de Reggio (1767-1847), French soldier. 2 Portraits

Gerard Kango Ouedraogo (1925-2014), Prime Minister of Upper Volta (now Burkina Faso). 1 Portrait

William Oughtred (1575-1660), Mathematician. 7 Portraits

Ouida (Marie Louise de la Ramée) (1839-1908), Novelist. 6 Portraits

Odette Ouimet (née Lapointe) (1909-2007), Daughter of Ernest Lapointe. 1 Portrait

Herman Ould (1885-1951), Dramatist, poet and critic. 6 Portraits

Walter William Ouless (1848-1933), Portrait painter. 11 Portraits

Brian Oulton (1908-1992), Actor. 1 Portrait

Ralph Henry Lefroy Oulton (1904-1991), Brigadier. 1 Portrait

Thérèse Oulton (1953-), Painter. 2 Portraits

Wilfred Ewart Oulton (1911-1997), Air Vice-Marshal. 1 Portrait

Adhémar Louis Frédéric Ghislain, comte d'Oultremont de Duras (1845-1910), Belgian politician and diplomat. 1 Portrait

Anna Caroline Oury (née de Belleville) (1808-1880), Pianist and composer. 1 Portrait

Herman George Ouseley, Baron Ouseley (1945-), Politician; President, Different Realities Partnership Ltd. 1 Portrait

Sir Frederick Arthur Gore Ouseley, 2nd Bt (1825-1889), Church musician and composer. 6 Portraits

Gideon Ouseley (1762-1839), Irish Methodist preacher. 1 Portrait

Sir Gore Ouseley, 1st Bt (1770-1844), Diplomat and oriental scholar. 4 Portraits

Sir James Outram, 1st Bt (1803-1863), Lieutenant-General. 10 Portraits

Joseph Outram (1766-1802), Diplomat and oriental scholar. 2 Portraits

Marjorie Isabella Outram, Physician; daughter of Sir Francis Davidson Outram. 2 Portraits

Slecna Emma Outratova (née Cepkova) (born circa 1900), Czech tennis player. 1 Portrait

Ernest Carrington Ouvry (1866-1951), Solicitor. 1 Portrait

Horace Ové (1939-), Film-maker and photographer. 1 Portrait

Douglas Overall (1892-1978), Chartered surveyor and property developer. 1 Portrait

John Overall (1560-1619), Bishop of Norwich. 18 Portraits

Johann Friedrich Overbeck (1789-1869), Painter. 1 Portrait

Sir Robert Leslie Overbury (1887-1955), Political secretary. 4 Portraits

Sir Thomas Overbury (1581-1613), Poet and courtier. 18 Portraits

Walter Henry Overs (1870-1934), Bishop of Liberia. 1 Portrait

Samuel Jones Loyd, 1st Baron Overstone (1796-1883), Banker. 5 Portraits

Harriet (née Wright), Lady Overstone (died 1864), Wife of Baron Overstone; daughter of Ichabod Wright. 2 Portraits

Sir Arnold Edersheim Overton (1893-1975), Political secretary. 3 Portraits

John Overton (1639 or 1640-1713), Map and print publisher. 1 Portrait

Aida Overton Walker (1880-1914), Actress, dancer and singer. 3 Portraits

John Campbell White Overtoun, 1st Baron Overtoun (1843-1908), Philanthropist and chemical manufacturer. 4 Portraits

Stephen Michael James ('Steve') Ovett (1955-), Middle distance runner; Olympian. 2 Portraits

Sir Esmond Ovey (1879-1963), Diplomat. 2 Portraits

Taiwo Owatemi (1992-), Senior Oncology Pharmacist and Labour politician; MP for Coventry North West. 1 Portrait

David Anthony Llewellyn Owen, Baron Owen (1938-), Labour politician; Foreign Secretary and co-founder of the Social Democratic Party. 8 Portraits

Sir Alfred George Beech Owen (1908-1975), Director. 1 Portrait

Alison Owen (1961-), Film producer. 1 Portrait

Alun Davies Owen (1925-1994), Playwright. 3 Portraits

Caroline Owen (1946-), Niece of Wenda Parkinson (née Rogerson). 1 Portrait

C. Owen, President, Finchley Harriers. 1 Portrait

David Lanyon Lloyd Owen (1917-2001), Major-General. 1 Portrait

Dawn Owen (active 1937), Tennis player; daughter of Sefton Owen. 1 Portrait

Derwyn Trevor Owen (1876-1947), Archbishop of Toronto and Primate of Church of England in Canada. 1 Portrait

Sir Douglas Owen (1850-1920), Barrister. 4 Portraits

Sir Edward Campbell Rich Owen (1771-1849), Naval officer. 1 Portrait

Edward Rodney ('Roddy') Owen (born 1856), Sportsman. 3 Portraits

Emmie Owen (1871-1905), Actress and opera singer. 1 Portrait

Frank Owen (1905-1979), Journalist, writer and broadcaster. 8 Portraits

George Douglas Owen (1887-1965), Colonial secretary. 1 Portrait

Sir Goronwy Owen (1881-1963), Politician and Lieutenant-Colonel. 5 Portraits

Guy Butler Owen (1870-1951), Colonial broker in the City of London. 1 Portrait

Hugh Owen (1784-1861), Soldier in service of Portugal. 1 Portrait

Sir Hugh Owen (1804-1881), Campaigner for education in Wales. 1 Portrait

Sir Hugh Owen (1835-1916), Public health and water local government commissioner. 1 Portrait

James Owen (1654-1706), Nonconformist minister. 1 Portrait

Jean Owen (Samantha Jones) (1943-), Singer; member of The Vernons Girls. 1 Portrait

John Owen (1563 or 1564-1622?), Latin poet. 7 Portraits

Sir John Owen (1600-1666), Welsh royalist commander and vice admiral for North Wales. 3 Portraits

John Owen (1616-1683), Puritan divine. 22 Portraits

John Owen (1766-1822), Missionary society administrator. 1 Portrait

John Owen (1854-1926), Bishop of St David's. 2 Portraits

Sir (William) Leonard Owen (1897-1971), Atomic engineer. 8 Portraits

Leslie Owen (1886-1947), Bishop of Lincoln. 3 Portraits

Hon. Margaret Owen (née Denman) (1815-1899), Former wife of Henry William Macaulay and of Edward Cropper, and later wife of John Owen; daughter of 1st Baron Denman. 1 Portrait

Mark Owen (1972-), Singer, songwriter and member of 'Take That'. 1 Portrait

Michael Owen (1979-), Footballer. 1 Portrait

Nicholas Owen (died 1606), Carpenter and Jesuit lay brother. 1 Portrait

Pat Owen (active 1937), Tennis player; daughter of Sefton Owen. 1 Portrait

Philip Loscombe Wintringham Owen (1920-2001), Soldier, lawyer, Justice of the Peace and politician; MP. 10 Portraits

Reginald Herbert Owen (1887-1961), Bishop of New Zealand. 1 Portrait

Sir Richard Owen (1804-1892), Naturalist, comparative anatomist and palaeontologist. 35 Portraits

Richard Arthur James Owen (1910-1997), Rear-Admiral. 2 Portraits

Robert Owen (1771-1858), Pioneer of practical socialism. 8 Portraits

Rowland Hubert Owen (1903-1995), Senior UK trade commissioner in India, Burma and Ceylon. 2 Portraits

Ruth Owen (née Knaggs), Wife of George Douglas. 1 Portrait

Samuel Owen (1769-1857), Watercolour painter. 1 Portrait

Sidney George Owen (1858-1940), Classical scholar. 2 Portraits

Dame Susan Jane ('Sue') Owen (1955-), Economist and academic; Permanent Secretary of the Department for Culture, Media and Sport. 1 Portrait

S. Owen. 1 Portrait

Ursula Margaret Owen (1937-), Co-founder and Managing Director, Virago Books; Editor and Chief Executive, Index on Censorship. 3 Portraits

Violet Owen (née Chamberlain) (1902-1998), Tennis player; hockey player; wife of Llewellyn Gordon Owen. 1 Portrait

Wilfred Owen (1893-1918), Poet. 1 Portrait

William James Owen (1901-1981), Politician, adult education class teacher and lecturer. 3 Portraits

Sir Charles John Owens (circa 1845-after 1912), General Manager of the London and South-Western Railway. 1 Portrait

Jesse Owens (1913-1980), American athlete; Olympian. 1 Portrait

Patricia Owens (1925-2000), Actress. 1 Portrait

Dame Anne Elizabeth Owers (née Spark) (1947-), Campaigner, administrator and policy advisor; HM Chief Inspector of Prisons. 1 Portrait

Gerald Robert Owst (1894-1962), Professor of Education, University of Cambridge. 1 Portrait

William Owtram (Outram) (baptised 1626-1679), Church of England clergyman. 1 Portrait

Abigail Owuo, Mother of Stormzy. 1 Portrait

William Oxberry (1784-1824), Actor. 1 Portrait

Henry Oxburgh (died 1716), Jacobite Insurgent. 3 Portraits

Rudi Oxenaar (1925-2005), Museum director. 1 Portrait

Marie Adelaide Oxenbridge (née Maude) (1814-1897), Former wife of 2nd Earl of Yarborough, and later wife of William J. Monson, Viscount Oxenbridge; daughter of 3rd Viscount Hawarden. 1 Portrait

Helen Oxenbury (1935-), Children's books illustrator. 1 Portrait

Charles Oxenden (1800-1874), Clergyman. 1 Portrait

Elizabeth Oxenden (née Wilson), First wife of Montagu Oxenden; daughter of Richard Wilson. 1 Portrait

Sir Henry Oxenden, 7th Bt (1756-1838). 1 Portrait

Montagu Oxenden (1799-1880), Clergyman; son of Sir Henry Oxenden, 7th Bt. 1 Portrait

John Oxenford (1812-1877), Playwright and translator. 1 Portrait

John Oxenham (1852-1941), Journalist, novelist and poet. 3 Portraits

Samuel Oxenham (1786-1861), Auctioneer. 1 Portrait

William Oxenham (1800-1863), Teacher and religious writer. 2 Portraits

Margaret Emma Alice ('Margot') Asquith (née Tennant), Countess of Oxford and Asquith (1864-1945), Society hostess; second wife of 1st Earl of Oxford and Asquith; daughter of Sir Charles Tennant, 1st Bt. 53 Portraits

Jane Elizabeth Harley (née Scott), Countess of Oxford (1773-1824), Wife of Edward Harley 5th Earl of Oxford. 2 Portraits

John de Vere, 15th Earl of Oxford (1490?-1540), Courtier. 2 Portraits

Edward de Vere, 17th Earl of Oxford (1550-1604), Courtier. 3 Portraits

Henry de Vere, 18th Earl of Oxford (1593-1625), Hereditary Great Chamberlain. 4 Portraits

Robert de Vere, 19th Earl of Oxford (1575-1632), Soldier and nobleman. 2 Portraits

Aubrey de Vere, 20th Earl of Oxford (1626-1703), Soldier. 2 Portraits

Robert Harley, 1st Earl of Oxford (1661-1724), Lord Treasurer. 14 Portraits

Edward Harley, 2nd Earl of Oxford (1689-1741), Patron of letters and collector. 12 Portraits

Eliza (née Nugent), Countess of Oxford and Mortimer (circa 1806-1877), Wife of 6th Earl of Oxford and Mortimer; daughter of 1st Marquess of Westmeath. 1 Portrait

Herbert Henry Asquith, 1st Earl of Oxford and Asquith (1852-1928), Prime Minister. 73 Portraits

Julian Edward George Asquith, 2nd Earl of Oxford and Asquith (1916-2011), Colonial administrator. 2 Portraits

(John) Donald Alexander Arthur Makgill, 12th Viscount Oxfuird (1899-1986). 1 Portrait

Henry Oxinden (Oxenden) (1609-1670), Gentleman and letter-writer. 2 Portraits

Robert Dickinson Oxland (1889-1959), Air Vice-Marshal. 3 Portraits

Elizabeth Oxley (active 1679), Maid to Mr Bird. 1 Portrait

Reginald Stewart Oxley (1863-1951), Army officer. 5 Portraits

William Oxman (or Orsingham) (active 1660s), Preacher of the doctrines of the Fifth Monarchy Men. 2 Portraits

Robert Wardlow Oxspring (1919-1989), Group Captain. 3 Portraits

Oyama Iwao (1842-1916), Field Marshal; a founder of the Imperial Japanese Army. 1 Portrait

David Richard Oyebode (1898-1960), Bishop of Ibadan, Nigeria. 1 Portrait

Jan Oyra (born 1888), Dancer. 7 Portraits

William Maingay Ozanne (1891-1966), Major-General. 7 Portraits

Rifat Ozbek (1953-), Fashion designer. 2 Portraits