List of people named O'Brien

O'Brien is a surname of Irish origin which has many variants in the Irish diaspora worldwide, such as O'Bryan, O'Brian, O'Briant, O'Brient, O'Bryant, O'Brine, O'Bryen etc., which all claim a general common ancestry with the original Gaelic surname being Ó Briain or Uí Briain. Notable people with the surname include:

Real people

• Aidan O'Brien (b. 1969), Irish race horse trainer
• Alan O'Brien, Irish association football player
• Alex O'Brien (b. 1970), professional American tennis player
• Ambrose O'Brien
• Andy O'Brien (disambiguation), various
  • Andy O'Brien (footballer), Irish association football player
• Anne O'Brien (disambiguation), various
  • Anne O'Brien (athlete) (1911–2007), American track and field athlete
• Arthur O'Brien
• Austin O'Brien
• Barry O'Brien
• Billy O'Brien (1860–1911), American baseball player
• Brendan O'Brien (disambiguation), various
• Brenna O'Brien
• Brock O'Brien
• Buck O'Brien
• Burton O'Brien
• Cathy O'Brien (conspiracy theorist) (b. 1957), purported American child-slave/sex-abuse victim
• Cathy O'Brien (athlete) (b. 1967), American long-distance runner
• Charles O'Brien (disambiguation), various
  • Charles O'Brien, 5th Viscount Clare
  • Charles O'Brien, 6th Viscount Clare
  • Charles O'Brien, 7th Viscount Clare
• Christian O'Brien (1914-2001), British geologist, author & historian
• Ciaran O'Brien
• Cinders O'Brien
• Clinton O'Brien (b. 1974), Australian rugby league footballer
• Conal O'Brien
• Conan O'Brien (b. 1963), US comedian and talk show host
• Connor O'Brien (disambiguation)
  • Connor O'Brien, King of Thomond (died 1540)
  • Connor O'Brien, 3rd Earl of Thomond (1534?–1581)
  • Connor O'Brien, 2nd Viscount Clare (1605–1670)
  • Connor O'Brien (alpine skier) (born 1961), Canadian alpine skier
• Conor O'Brien (disambiguation), various
  • Conor Myles John O'Brien, 18th Baron Inchiquin
• Cubby O'Brien
• Daniel O'Brien (disambiguation), various
  • Daniel O'Brien, 1st Viscount Clare Irish member of the confederation of Kilkenny
  • Daniel O'Brien, 3rd Viscount Clare
  • Daniel O'Brien, 4th Viscount Clare
• Danielle O'Brien
• Danny O'Brien (disambiguation), various
• Dara Ó Briain, Irish comedian and presenter
• Darcy O'Brien (1939–1998), American true crime author
• Daryl O'Brien (b. 1941), Australian footballer (Australian rules football)
• Dave O'Brien (sportscaster), American sportscaster
• Dave O'Brien (actor) (1912–1969), American film actor
• David O'Brien (disambiguation), various
• Declan O'Brien, president of Utopia Pictures & Television, and a writer and producer
• Declan O'Brien (footballer)
• Dennis O'Brien (disambiguation), various
• Derek O'Brien (disambiguation), various
• Dermod O'Brien (1865–1906), Irish painter
• Donald O'Brien (disambiguation), various
• Doug O'Brien
• Dylan O'Brien (b. 1991), American actor
• Ed O'Brien, (b. 1968), English musician
• Edmond O'Brien
• Edna O'Brien (b. 1930), Irish novelist
• Edward O'Brien (disambiguation), various
  • Edward O'Brien (Irish republican) (1974–1996), Provisional Irish Republican Army (IRA) volunteer
• Edwin Frederick O'Brien, Grand Master of the Equestrian Order of the Holy Sepulchre of Jerusalem
• Eileen O'Brien (disambiguation), various
• Elaine O'Brien, American politician
• Erin Joanne O'Brien (b. 1935), American actress
• Erin O'Brien (writer), American writer
• Eugene O'Brien (disambiguation), various
  • Eugene O'Brien (actor), actor of the silent film era
  • Eugene O'Brien (racing driver), British auto racing driver
• Fergal O'Brien, Irish professional snooker player
• Fergus O'Brien
• Fitz James O'Brien, Irish born American novelist
• Flann O'Brien, pen name of Irish novelist and satirist Brian O'Nolan
• Gareth O'Brien
• George O'Brien (disambiguation), various
  • George O'Brien (actor) (1899–1985), American silent movie actor
  • George O'Brien (cricketer) (b. 1984), Bermudian cricketer
  • George O'Brien (footballer) (b. 1935), former Southampton F.C. footballer
  • George O'Brien (painter) (1821–1888), New Zealand painter
  • George O'Brien (captain) (1788–1818), Irish, former lieutenant of the British Royal Navy, died in combat, fighting for the Independence of Chile
  • George Thomas Michael O'Brien (fl. 1890s – 1900s), former governor of Fiji
  • George H. O'Brien, Jr. (1926–2005), Korean War Congressional Medal of Honor Recipient
  • George M. O'Brien (1917–1986), member of the U.S. House of Representatives
• Ger O'Brien
• Geoffrey O'Brien
• Glenn O'Brien
• Gray O'Brien
• Harry O'Brien (changed his name in 2013 to "Heritier Lumumba")
• Harvey O'Brien
• Henry O'Brien (disambiguation), various
• Hod O'Brien (1936–2016), American jazz pianist
• Hugh O'Brien (1827–1895) mayor of Boston
• Iain O'Brien
• Ian O'Brien
• Jack O'Brien (disambiguation), various
• Jake O'Brien
• James O'Brien (disambiguation)
• Jamie O'Brien (disambiguation), various
• Jeremiah O'Brien (1744–1818), US Navy officer of the American Revolutionary War
• Jesse O'Brien (disambiguation), various
• Jim O'Brien (disambiguation)
• Joan O'Brien
• Joey O'Brien
• John O'Brien (disambiguation), various
  • John O'Brien (marine artist) (1831–1891), Canadian painter
  • John O'Brien (rower), New Zealand rower
  • John O'Brien (soccer), American soccer player
  • John J. O'Brien, American basketball referee and administrator
  • John Thomond O'Brien
  • John P. O'Brien, Mayor of New York City
• Joseph O'Brien (disambiguation), various
• Kate O'Brien (disambiguation)
• Kathleen O'Brien
• Katie O'Brien, British female tennis player
• Keith O'Brien, Roman Catholic Cardinal Archbishop of Saint Andrews and Edinburgh. Keith O'Brien, Journeyman Lineman
• Ken O'Brien
• Kerry O'Brien (disambiguation)
• Kevin O'Brien (disambiguation), various
  • Kevin O'Brien (Irish football)
  • Kevin O'Brien (Texas pastor), Independent Baptist pastor in Texas
• Kieran O'Brien
• Kim O'Brien, American film and television actress
• Kirsten O'Brien (born 1972), British TV presenter
• Kitty Wilmer O'Brien, Irish painter
• Kyan Laslett O'Brien Music Composer
• Larry O'Brien (1917–1990), American politician
• Larry O'Brien (Canadian politician), Canadian entrepreneur and politician; Mayor of Ottawa, 2006–2010
• Laurence O'Brien
• Lawrence O'Brien
• Leighton O'Brien
• Leo O'Brien
• Leslie O'Brien
• Liam O'Brien (disambiguation), various
• Lucy O'Brien
• Luke O'Brien
• Margaret O'Brien
• Mariah O'Brien
• Mark O'Brien (disambiguation), various
  • Mark O'Brien (Ontario politician), Green Party candidate in the 2004 Canadian federal election
• Maureen O'Brien
• Michael O'Brien (disambiguation), various
  • Michael O'Brien (swimmer) (born 1965), American freestyle swimmer
• Mick O'Brien (musician), Traditional Irish musician
• Mike O'Brien (hurler)
• Miles O'Brien (journalist), journalist and CNN anchor
• Michele O'Brien
• Mick O'Brien (disambiguation), various
• Miles O'Brien (disambiguation), various
• Mollie O'Brien
• Niall O'Brien (disambiguation), various
• Nick O'Brien
• Paddy O'Brien (disambiguation), various
• Parry O'Brien
• Patrick O'Brien (disambiguation), for people with forename Patrick or Pat
• Pat O'Brien (disambiguation), various
• Paul O'Brien (disambiguation), various
• Peter O'Brien (disambiguation), various
• Raymond O'Brien, American Roman Catholic priest
• Richard O'Brien (disambiguation), various
  • Richard O'Brien (born 1942), Rocky Horror Picture Show writer and actor
  • Richard Baptist O’Brien (1809–1885), Irish priest, author and nationalist
• Robert O'Brien (disambiguation), various
  • Robert O'Brien (auto racer), American racing driver
  • Robert C. O'Brien (author), pen name of Robert Leslie Conly (1918–1973), American author and journalist
• Ron O'Brien (disambiguation), various
• Roy O'Brien
• Scott O'Brien
• Sean O'Brien (disambiguation)
• Shane O'Brien (disambiguation), various
• Shannon O'Brien
• Shauna O'Brien, American erotic film star
• Simon O'Brien (disambiguation), various
• Soledad O'Brien, American television journalist
• Stephen O'Brien, UK conservative politician for Eddisbury
• Steve O'Brien
• Stuart O'Brien, lead guitarist of rock band Amnezia
• Terence O'Brien (disambiguation), various
  • Terence Albert O'Brien (1600–1651), beatified Irish bishop
• Thomas O'Brien (disambiguation), various
  • Thomas J. O'Brien (Illinois), Illinois politician
  • Thomas J. O'Brien (Massachusetts), Massachusetts State Representative
  • Thomas J. O'Brien (Michigan) (1842–1933), Michigan politician and U. S. ambassador
• Tim O'Brien (disambiguation), various
  • Tim O'Brien (author) (born 1946), American author
  • Tim O'Brien (musician) (born 1954), American musician
  • Tim O'Brien (musician) (born 1954), American musician
  • Sir Tim O'Brien, 3rd Baronet (1861–1948), Irish-born cricketer
  • Tim O'Brien (politician) (born 1968), legislator in the Connecticut House of Representatives
  • Tim O'Brien (illustrator) (born 1964), American artist
• Timothy O'Brien (theatre designer) (born 1929), British theatre designer
• Timothy O'Brien (endocrinologist), Irish professor
• Timothy L. O'Brien (born 1961), American journalist
• Tina O'Brien (born 1983), English actress
• Tom O'Brien (UK politician) (1900–1970), British trade unionist and Member of Parliament
• Tom O'Brien (second baseman) (1860–1921), 19th century baseball player
• Tom O'Brien (outfielder) (1873–1901), baseball outfielder
• Tom O'Brien (actor) (b. 1965), American film actor
• Tom O'Brien (football coach) (b. 1948), American college football coach at North Carolina State University
• Tommy O'Brien (1918–1978), baseball outfielder
• Trever O'Brien
• Una O'Brien, British civil servant
• Vincent O'Brien (disambiguation), various
  • Vincent O'Brien, Irish race horse trainer
• Virginia O'Brien
• Walter O'Brien, Computer expert and Irish businessman
• Walter A. O'Brien, American Progressive Party politician
• William O'Brien (disambiguation), various
  • William O'Brien, Irish Nationalist and politician
  • William Smith O'Brien
• Willis O'Brien
• Conor Murphy O'Brien (Died 1478), Killed during Spanish Inquisition with brother Adam Murphy O'Brien.

Fictional people named O'Brien

• O'Brien (1984), a character in George Orwell's Nineteen Eighty-Four
• Keiko O'Brien, fictional character, wife of Miles O'Brien in Star Trek: The Next Generation and Deep Space Nine
• Lady Cassandra O'Brien, fictional character, Doctor Who villainess
• Miles O'Brien (Star Trek), fictional character in Star Trek: The Next Generation and Deep Space Nine
• Sarah O'Brien, fictional character on the ITV series Downton Abbey

See also

• O'Brien dynasty, the royal dynasty who ruled Thomond