This is a list of notable alumni and faculty members of Trinity College Dublin.

Armed forces

• Tom Clonan, retired Irish Army officer, author and security analyst
• Eyre Coote (1762–1823), Irish British Army soldier and politician; Governor-General of Jamaica (1806–1808)
• Henry George Gore-Browne (1830–1912), Irish British Army colonial of the 100th Regiment of Foot; awarded the Victoria Cross (circa 1857, while a captain of the 32nd Regiment of Foot)
• James Murray Irwin (1858–1938), Irish British Army major-general doctor
• Col. Ernest Achey Loftus, CBE, soldier, teacher and diarist
• Michael Lynch, MMG (1942–2008), Irish Army officer and recipient of the Military Medal for Gallantry
• Robert Nairac (1948–1977), English British Army captain; abducted and killed by the Provisional Irish Republican Army in 1977; posthumously awarded the George Cross (1979)
• Robert Ross (1766–1814), Anglo-Irish British Army officer; participated in the Napoleonic Wars (various ranks); commander of the British force which sacked Washington, D.C., and burned down the White House, during the War of 1812 (as major-general)
• Sir Hovenden Walker (1656/1666–1725/1728), Royal Navy officer

Arts

• Lenny Abrahamson, Oscar-nominated film director
• Thomas Bateson, 17th-century writer of madrigals
• Aisling Bea, actress and comedian
• Cathy Belton, actress
• John Butler Yeats, artist
• David Benioff, filmmaker and co-creator of Game of Thrones
• Michael Bogdanov, theatre director
• Sammy Copley, singer and musician
• Derbhle Crotty, actress
• Brian Boydell, composer
• Selina Cartmell, theatre director, and director of the Gate Theatre
• Lou Caubet, Queen of the Swag
• Michael Colgan, director of the Gate Theatre, film and television producer
• Houston Collisson, musician
• Anne Crookshank, emeritus professor of the history of art and founder of the faculty
• Chris de Burgh, singer and musician
• Thomas Manly Deane, architect
• Pádraic Delaney, actor
• Donnacha Dennehy, composer
• Ciarán Farrell, composer
• Margaret Fiedler, musician and singer
• Susan Fitzgerald, actress
• Percy French, songwriter and entertainer
• Jack Gleeson, actor
• Constantine Gregory, actor
• Lisa Hannigan, singer
• Aaron Heffernan, actor
• Ciaran Hope, composer of orchestral, choral, and film music
• Andrew Hozier-Byrne, singer-songwriter
• Fergus Johnston, composer
• Dillie Keane, singer-songwriter and actress
• Lisa Lambe, actress and singer
• Nathaniel Lande, author, filmmaker and former creative director of Time
• Jacknife Lee, record producer
• Allen Leech, actor
• Damien Leith, singer
• Eleanor McEvoy, singer-songwriter
• Katie McGrath, actress
• Sean Pol McGreevy, actor/musician
• Paul McGuinness, manager of U2
• Pauline McLynn, actress, comedian and novelist
• Katie McMahon, singer and musician
• Ruth Negga, actress
• Jonathon Ng, musician
• Méav Ní Mhaolchatha, singer
• Sylvia O'Brien, opera singer
• David O'Doherty, comedian
• Rebecca O'Mara, actress
• Matthew Pilkington, satirist and art historian
• Laura Pyper, actress
• Norman Rodway, actor
• James Edward Rogers, architect and artist^[1]
• Andrew Scott, actor
• Chris Singleton, singer-songwriter and producer
• Max Stafford-Clark, theatre director
• Rhys Thomas, film and television director
• Stanley Townsend, actor
• Tom Vaughan-Lawlor, actor
• D. B. Weiss, novelist and co-creator of Game of Thrones
• Garret Wesley, 1st Earl of Mornington, composer, father of the Duke of Wellington
• Dominic West, British actor
• Ian Whitcomb, singer and entertainer
• James White, historical novelist

Broadcasting and journalism

• Bruce Arnold, journalist and author
• Sharon Ní Bheoláin, news presenter
• James David Bourchier, Balkans correspondent for The Times and advisor to Tzar Ferdinand of Bulgaria
• John Bowman, journalist and broadcaster
• Rory Carroll, US West Coast correspondent, The Guardian
• Tony Connelly, Europe Editor, RTÉ
• Crosaire (J. D. Crozier), B.A. Dubl 1940, compiled the cryptic crossword for The Irish Times for fifty-nine years^[2]
• Ray D'Arcy, television and radio presenter
• Joe Duffy, radio presenter
• Maia Dunphy, broadcaster
• Ken Early, soccer journalist
• Robert Fisk, journalist
• Douglas Gageby, editor of the Irish Times
• Veronica Guerin, crime reporter
• Charles Graham Halpine, journalist
• Vincent Hanna, Northern Irish television journalist
• Brian Inglis, journalist, historian and television presenter
• Mary Jordan, Pulitzer Prize-winning journalist
• Aine Lawlor, radio and television presenter
• Quentin Letts, British columnist and theatre critic
• Martyn Lewis, British newsreader and journalist
• Mark Little, journalist
• Alex Massie, freelance journalist
• David McWilliams, writer and broadcaster on economic and social issues
• Denis Murray OBE former BBC Ireland Correspondent.
• Edmund O'Donovan, war correspondent
• Rupert Pennant-Rea, former editor of The Economist
• Gerry Ryan, radio presenter
• Cliff Taylor, editor, Sunday Business Post
• Nick Webb, Business Editor, Sunday Independent

Business

• Conrad Burke, physicist and entrepreneur^[3]
• Paul Coulson^[4]
• Lord Haskins of Skidby, chairman of Northern Foods^[5]
• Alan Joyce, chief executive of Qantas^[6]
• Laura Magahy, company director and former director of Sláintecare^[7]
• Dermot Mannion, former chief executive of Aer Lingus^[8]
• Michael O'Leary, chief executive of Ryanair^[9]
• Willie Walsh, chief executive of British Airways^[10]

Economics

• Sean Barrett, economist and member of Seanad Éireann
• Peter Bellew, chief executive of Malaysia Airlines
• Phelim Boyle (born 1941), academic and economist; pioneer of the use of Monte Carlo methods in derivatives pricing
• George Alexander Duncan (1902–2006), professor of political economy
• Francis Ysidro Edgeworth (1845–1926), philosopher and political economist
• Morgan Kelly, professor of economics, University College Dublin
• Philip R. Lane (born 1969), academic and economist
• Kevin O'Rourke, Professor of Economic History, Oxford

Education

• Robert Blackburn, International Secretary of the United World Colleges; Deputy Director General of the International Baccalaureate
• Increase Mather, seventh president of Harvard University
• McFadden Alexander Newell, first principal of Maryland State Normal School (Towson University)
• Ferdinand von Prondzynski, president of Dublin City University
• Louise Richardson, former executive dean of Radcliffe Institute for Advanced Study; political scientist at Harvard University; Principal of the University of St Andrews; first female Vice-Chancellor of the University of Oxford as of 1 Jan 2016

Science, mathematics, engineering and medicine

• Beulah Bewley, public health physician
• Denis Parsons Burkitt, surgeon and researcher into childhood cancer (cf. Burkitt's lymphoma)
• William C. Campbell, Nobel Prize in Physiology or Medicine 2015
• Georgia Chenevix-Trench, cancer researcher
• Aeneas Coffey, engineer, inventor of the Coffey still
• Steven Collins, co-founder of Havok
• Andrew Hope Davidson, physician and Master of the Rotunda Hospital
• George Francis FitzGerald, professor of physics
• Gordon Foster (1920–2010), fellow emeritus at the college; Professor of Statistics and Dean of the Faculty of Engineering and statistics; author of the International Standard Book Number (ISBN) system (a global standard), and the book Information Technology in Developing Countries^[11][12]
• Aoife Gowen, researcher and professor
• Oliver St John Gogarty, physician and ear surgeon
• Alexander Henry Haliday, entomologist
• Hugh Hamilton, professor of natural philosophy
• William Rowan Hamilton, mathematician
• William Henry Harvey, botanist
• William Charles Hood, physician
• Caroline Hussey, microbiologist
• Werner Israel, physicist
• John Joly, physicist and geologist
• Sir John MacNeill, civil engineer
• Robert Mallet, engineer and scientist
• Una Martin, Clinical Pharmacologist
• Richard Maunsell, Chief Mechanical Engineer, South Eastern and Chatham Railway, and Southern Railway
• Henry Benedict Medlicott, geologist
• William Molyneux, natural philosopher
• Suzanne O'Sullivan, neurologist, prizewinning writer
• Charles Algernon Parsons, engineer, inventor of the modern steam turbine
• Thomas Preston, scientist
• Ouida Ramón-Moliner, anaesthetist^[13]
• Michael Roberts, mathematician
• William Johnson Sollas, geologist and anthropologist
• William Stokes, physician and professor
• George Johnstone Stoney, physicist who proposed the term 'electron' for the fundamental unit of electricity
• Jane Stout, ecologist and entomologist
• John Lighton Synge, mathematician and scientist
• Charles Hawkes Todd, physician, professor, and president of the Royal College of Surgeons
• Robert Bentley Todd, physician, Kings College professor, and identified with Todd's palsy
• Edward Hutchinson Synge, Irish physicist and nanoscience pioneer
• Ernest Walton, Nobel Prize winner
• Benjamin Worsley, 17th-century physician, surveyor and alchemist
• Peter Wyse Jackson, botanist
• Valerie O'Leary, scientist and researcher

Humanities

• James Auchmuty, historian, wartime MI6 propagandist and inaugural vice-chancellor of the University of Newcastle, Australia
• Jonathan Bardon, historian
• George Berkeley, philosopher (cf. subjective idealism)
• Turtle Bunbury, historian and author
• J. B. Bury, Irish historian and classicist
• Anna Chahoud, Latin philologist
• Edward Courtney, scholar of Latin literature
• John Cruickshank, scholar of French literature, language, and culture
• Edward Dowden, Shakespearean scholar
• Roy Foster, Carroll Professor of Irish History, Hertford College, Oxford
• Ian Graham (BSc 1951), Mayanist archaeologist^[14]
• Edward Hincks, Orientalist
• Linda Hogan, fellow and Professor of Ecumenics
• Declan Kiberd, Professor of Anglo-Irish Literature, University College Dublin
• R. J. B. Knight, naval historian
• Richard Layte, Professor of Sociology
• William Edward Hartpole Lecky, historian
• John V. Luce, classicist
• F. S. L. Lyons, historian and Provost of Trinity College Dublin
• John Pentland Mahaffy, classicist
• R. B. McDowell, historian
• Robert McKim, philosopher of religion
• Christine E. Morris, Andrew A. David Professor in Greek Archaeology and History
• Jane Ohlmeyer, historian
• Franc Sadleir, Regius Professor Greek and later Provost of Trinity College Dublin; advocate for Catholic emancipation
• Brendan Simms, historian and fellow of Peterhouse, Cambridge
• William Bedell Stanford, senator and Regius Professor of Greek at Trinity College Dublin
• Alastair Sweeny, Canadian historian, publisher
• Rory Sweetman, New Zealand historian
• James Henthorn Todd, Regis Professor, co-founder of Irish Archaeological Society, president of Royal Irish Academy
• Nikolai Tolstoy, historian

Law

• Sir James Andrews, 1st Baronet, Lord Chief Justice of Northern Ireland
• Deirdre Curtin, lawyer
• Susan Denham, former Chief Justice of the Irish Supreme Court^[15]
• Sir Valentine Fleming, chief justice of the Supreme Court of Tasmania
• Henry Flavelle Forbes, C.I.E., President of the Court of Appeal, Iraq, 1920/21
• Hari Singh Gaur, barrister, jurist and educationist in India
• John George, Solicitor-General for Ireland
• Edward Gibson, 1st Baron Ashbourne, Attorney-General and Lord Chancellor of Ireland
• Maureen Harding Clark, judge of the International Criminal Court and the High Court of Ireland
• Gerard Hogan, judge of the Court of Appeal
• Brian McCracken, retired Justice of the Irish Supreme Court; chair of the McCracken Tribunal
• Catherine McGuinness, retired Justice of the Irish Supreme Court; former member of Seanad Éireann and President of the Law Reform Commission
• Frank Murphy, United States Supreme Court Associate Justice (1940–49)
• Patricia O'Brien, United Nations Under-Secretary-General for Legal Affairs and United Nations Legal Counsel
• Christopher Palles, judge, Solicitor-General for Ireland
• Alan Shatter, politician
• James Skinner, Chief Justice of Zambia and Malawi
• William Frederick L. Stanley (1872–1939), lawyer and judge in Republic of Hawaii
• William Stawell, Chief Justice of the Supreme Court of Victoria^[16]
• Egbert Udo Udoma, justice of the Nigerian Supreme Court and Chief Justice of Uganda
• Peter Whelan, professor of law

Literature

• Sebastian Barry, novelist
• Samuel Beckett, dramatist, Nobel laureate
• Eavan Boland, poet
• John Boyne, novelist
• Nicholas Brady, poet and translator
• Erskine Barton Childers, writer and journalist
• Eoin Colfer, children's writer
• Naoise Dolan, novelist
• William Congreve, playwright and poet
• Michael de Larrabeiti, author
• J. P. Donleavy, Irish-American author
• Richard Ellmann, literary critic and biographer
• Anne Enright, novelist, winner of Man Booker Prize 2007
• George Farquhar, dramatist
• Oliver Goldsmith, writer and surgeon
• John Haffenden, professor of literature
• Claire Hennessy, writer and editor
• Jennifer Johnston, Man Booker Prize–winning novelist
• Brendan Kennelly, poet and author
• William Larminie, poet
• Sheridan Le Fanu, author
• Michael Longley, poet
• Patrick MacDonogh, poet
• Rupert Mackeson, racing author
• Thomas MacNevin, writer and journalist
• Derek Mahon, poet
• Bryan Malessa, novelist
• Barry McCrea, novelist and lecturer
• Mark C. McGarrity, crime fiction novelist (under pen name Bartholomew Gill)
• Annemarie Ní Churreáin, poet
• Melatu-Uche Okorie, short-story writer
• Sally Rooney, novelist
• Oliver St. John Gogarty, poet and surgeon
• Jo Shapcott, poet
• Thomas Southerne, dramatist
• Bram Stoker, author, known for Dracula
• Jonathan Swift, satirist, author of Gulliver's Travels
• John Millington Synge, dramatist, poet; author of The Playboy of the Western World
• Nahum Tate, lyricist and Poet Laureate
• William Trevor, novelist particularly known for short stories
• Trevor White, food critic and author of Kitchen Con
• John Duncan Craig, poet
• Oscar Wilde, poet, dramatist, wit; read Greats in Trinity 1871–1874;^[17]

Politics and government

• J. E. W. Addison, British judge and Conservative politician
• Ernest Alton, independent Unionist politician in the House of Commons of Southern Ireland and in Seanad Éireann
• Hugh Annesley, 5th Earl Annesley, M.P. for Cavan, later an Irish representative peer in the House of Lords
• Thekla Beere, civil servant and chairwoman of the ILO
• John Beresford, statesman
• Harman Blennerhassett, Irish-American supporter of the Burr conspiracy
• Frederick Boland, diplomat and twenty-first Chancellor of the University
• John Boyd, member of the Wisconsin State Assembly
• Noël Browne, Irish Minister for Health and physician
• Edmund Burke, philosopher, political theorist, statesman and MP for the British Whig Party
• Hugh Cairns, 1st Earl Cairns, Lord Chancellor of Great Britain and Chancellor of the University of Dublin
• Sir Edward Carson, leader of the Irish Unionists
• Hélène Conway-Mouret, French senator and former minister^[18]
• Richard Curran, National Centre Party and later Fine Gael TD
• Sir Colville Deverell, Governor of the Windward Islands and Mauritius
• Robert Emmet, Irish nationalist
• Henry Grattan, member of the Irish House of Commons
• Cecil Harmsworth, 1st Baron Harmsworth, Liberal MP and brother of press barons, Lord Northcliffe and Lord Rothermere
• Mary Harney, politician, former leader of the PDs and former Tánaiste
• Mark Herdman, diplomat, Governor of the British Virgin Islands (1986–1991)^[19]
• Douglas Hyde, first President of Ireland
• Princess Kako of Akishino, Japan^[20]
• Brian Lenihan, politician, former Minister for Finance
• George Macartney, British statesman (1st Earl Macartney)
• Jennifer Carroll MacNeill, politician
• Richard Graves MacDonnell, Governor of South Australia, Lieutenant-Governor of Nova Scotia and Governor of Hong Kong
• Josepha Madigan, politician, former Minister Minister for Culture, Heritage and the Gaeltacht
• Mairead Maguire (Irish School of Ecumenics), a peace activist, winner of the Nobel Peace Prize in 1976
• Mary McAleese, 8th President of Ireland
• Mary Lou McDonald, politician and leader of Sinn Fein*
• Leonard Greenham Star Molloy, surgeon and politician
• David Norris, senator, gay rights activist and former presidential candidate
• Conor Cruise O'Brien, politician, writer and academic
• John O'Connell, member of parliament, leader of the Repeal Association
• Liz O'Donnell, politician, former Minister for Overseas Development
• Emily O'Reilly, former journalist, author, Irish Ombudsman, European Ombudsman
• William Hoey Kearney Redmond, Nationalist politician; first World War fatality
• Mary Robinson, former President of Ireland
• Edward Stafford (politician) third Premier of New Zealand
• Sir Malcolm Stevenson, Governor of Cyprus and of the Seychelles
• James Stopford, 2nd Earl of Courtown, Tory politician
• Leo Varadkar, politician, Taoiseach and leader of Fine Gael
• Theobald Wolfe Tone, father of Irish republicanism
• Jaja Wachuku first Nigerian Foreign Affairs Minister
• Henry Westenra, 3rd Baron Rossmore, politician and piper
• Thomas Wyse, politician and diplomat

Religion

• Arthur William Barton, Church of Ireland Archbishop of Dublin
• John Henry Bernard, Church of Ireland Archbishop of Dublin
• Robert Henry Charles, biblical scholar, theologian, and translator
• Rt. Rev. Dr. John Curtis, bishop of Chekiang, China
• John Nelson Darby, evangelist and Bible translator
• Charles D'Arcy, Church of Ireland Archbishop of Dublin and Armagh
• John Dowden, Bishop of Edinburgh and ecclesiastical historian
• Richard William Enraght, Anglican priest and religious controversialist
• William Fitzgerald, Church of Ireland bishop and author
• David F. Ford, Regius Professor of Divinity at the University of Cambridge since 1991
• Alexander Charles Garrett, bishop of the Episcopal Church in the United States of America
• John Graham, author
• William Connor Magee, Anglican Archbishop of York
• Father John Main, OSB, Benedictine monk
• Fr. Malachi Martin S.J., author
• Charles Maturin, Church of Ireland clergyman and gothic author
• Joseph Ferguson Peacocke, Church of Ireland Archbishop of Dublin
• Robert Ram, author of The Soldiers Catechism issued to the New Model Army
• William Reeves, bishop, antiquarian, and President of the Royal Irish Academy
• Robert Warren Stewart, missionary to China, murdered in Kucheng Massacre
• James Henthorn Todd, biblical scholar, educator, and Irish historian: Regius Professor of Hebrew
• William Gowan Todd, author, cleric, and founder of St. Mary's Orphanage for Boys in London
• James Ussher, Primate of All Ireland, noted for calculating the date of creation as the night preceding Sunday 23 October 4004 BC
• Robert Wyse Jackson, Bishop of Limerick, Ardfert and Aghadoe

Sports

• Edward Allman-Smith (1886–1969), British Army soldier and field-hockey player; Olympic silver medalist, as member of the Ireland field-hockey team at the 1908 Summer Olympics
• Henry Dunlop, founder of Lansdowne Football Club and builder of Lansdowne Road stadium
• Michael Gibson, rugby footballer
• Ed Joyce^{[21][circular reference]} Irish cricketer
• James Lindsay-Fynn, rower, world championship gold, Great Britain, LM4 - Munich 2007
• Hugo MacNeill, Ireland and British and Irish Lions rugby player
• William McCrum, inventor of penalty kick of football
• Robin Roe (1928–2010), clergyman and rugby footballer
• Dick Spring (born 1950), Gaelic footballer, hurler, rugby footballer, businessman and politician

Other

• Sir Robert Anderson, intelligence officer, theologian and policeman
• Edward Chichester, 4th Marquess of Donegall
• Richard Lovell Edgeworth, inventor, father of Maria Edgeworth
• Mary Elmes (1908–2002), Irish aid worker who was honoured as Righteous Among the Nations for saving the lives of more than 200 Jewish children during the Second World War
• Michael Elmore-Meegan, expert on global health issues, author, humanitarian, founder of charities
• Scilla Elworthy, human rights campaigner
• Sally Fegan-Wyles, director of UNDG
• Half Hung MacNaghten, 18th-century gentleman fraudster
• Kevin McCormack, dancer with Riverdance; graduated from Trinity College with a Bachelor of Science in Pharmacy^[22]
• Leonard McNally, playwright, attorney, British spy
• Pamela Uba, medical scientist and first black person to win Miss Ireland title