O'Brien is a

surname In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give ...

of Irish origin. It has many variants in the Irish diaspora worldwide, such as Brien, O'Bryan,

O'Brian O'Brian is an Irish surname and may refer to: People named O'Brian Forename * O'Brian White (born 1985), Jamaican footballer * O'Brian Woodbine (born 1988), Jamaican footballer Surname * Conor O'Brian (born 1980), a ring name of American profe ...

, Brian, O'Brine and O'Bryen which all ''claim'' a general common ancestry. The original

Gaelic Gaelic (pronounced for Irish Gaelic and for Scots Gaelic) is an adjective that means "pertaining to the Gaels". It may refer to: Languages * Gaelic languages or Goidelic languages, a linguistic group that is one of the two branches of the Insul ...

surname is ''Ó Briain'' (plural, Uí Briain). Notable people with the name include:

As surname

A

Aidan O'Brien Aidan Patrick O'Brien (born 16 October 1969 in County Wexford, Ireland) Aidan O'Brien bio NTRA. ...

(born 1969), Irish race horse trainer *

Aiden O'Brien Aiden Anthony O'Brien (born 4 October 1993) is a professional association football, footballer who plays as a forward (association football), forward for club Woking F.C., Woking. Born in England, he represented the Republic of Ireland national ...

, Irish football player *

Alan O'Brien Alan O'Brien (born 20 February 1985) is an Irish former footballer who last played for Wealdstone. O'Brien, who played as a winger, represented the Republic of Ireland at full international level five times, all while he was on the books of New ...

, Irish association football player *

Alex O'Brien Alex O'Brien (born ) is an American former doubles world No. 1 tennis player. He gained the top ranking in May 2000 and was ranked as high as world No. 30 in singles in June 1997. He won his only singles title at New Haven, Connecticut, in 199 ...

(born 1970), American tennis player *

Ambrose O'Brien John Ambrose O'Brien (May 27, 1885 – April 24, 1968) was a Canadian industrialist and sports team owner. He was a founder of the National Hockey Association (NHA), owner of the Renfrew Millionaires and the founding owner of the Montreal Canad ...

(1885–1968), Canadian founder of National Hockey Association * Andy O'Brien (disambiguation), various * Anne O'Brien (disambiguation), various *

Arthur O'Brien Arthur Boniface O'Brien (15 May 1878 – 31 May 1951)Austin O'Brien Austin Taylor O'Brien (born May 11, 1981) is an American actor and photographer. He is known for playing the co-lead Danny Madigan in the Arnold Schwarzenegger film ''Last Action Hero'', followed by his turn into romance as Nick Zsigmond in '' ...

(born 1981), American actor and photographer

B

Barry O'Brien Barry O'Brien (born 1957) is an American television writer and producer best known as the co-creator of Disney Channel Original Series ''Hannah Montana''. His credits include ''Happy Days'', '' Perfect Strangers'', '' Hangin' with Mr. Cooper'', ...

(born 1957), American TV screenwriter and producer *

Billy O'Brien (baseball) William Smith O'Brien (March 14, 1860 – May 26, 1911) was an American Major League Baseball player who played first base. He was considered a "one-year wonder" and led the National League (NL) in home runs in 1887. Baseball career O'Brien ...

(1860–1911), American baseball player *

Billy O'Brien (footballer) Billy O'Brien (born 21 November 1995) is a former professional footballer who played as a goalkeeper. Born in England, he played for Wales at youth level internationally. He retired from football to become a Royal Marine Commando in 2017. Club c ...

, Welsh association football player * Brendan O'Brien (disambiguation), various *

Brenna O'Brien Brenna O'Brien (born March 9, 1991) is a Canadian actress and artist. She is best known for voicing Rin in the anime series '' Inuyasha''. O'Brien was in the original pilot of '' The Middle'' in 2007 also starring Ricki Lake and Atticus Shaffe ...

(born 1991), Canadian actress and voice actor * Brock O'Brien (born 1988), Australian rules footballer with Fremantle * Buck O'Brien (1882–1959), pitcher with Boston Red Sox and Chicago White Sox *

Burton O'Brien Burton O'Brien (born 10 June 1981) is a Scottish former professional association football, footballer, who played as a Midfielder#Central midfielder, central midfielder. After playing for Scotland national under-21 football team, Scotland at u ...

(born 1981), Scottish football player

C

* Casey O'Brien (b. 2001), American ice hockey player *

Cathy O'Brien (athlete) Cathy Schiro O'Brien (born July 19, 1967, in Janesville, Wisconsin) is a retired female long-distance runner from the United States. She was an Olympian, and she holds the US women's high school record in the marathon. O'Brien set her personal best ...

(b. 1967), American long-distance runner * Cathy O'Brien (conspiracy theorist) (b. 1957), American purported child-abuse victim * Cecily O'Bryen (1899–1984), British diving champion * Charles O'Brien (disambiguation), various * Christian O'Brien (1914–2001), British geologist, author & historian *

Ciaran O'Brien Ciaran Patrick O'Brien (born November 17, 1987) is an American former soccer coach and player. Early life and education O'Brien played center midfield for four years at Decatur High School in Federal Way, Washington, where he earned NSCAA All- ...

(born 1987), American soccer coach and player *

Cinders O'Brien John F. "Cinders" O'Brien ''AKA: Darby O'Brien'' (April 15, 1867 – March 11, 1892) was an American Major League Baseball pitcher from to . He played with the Cleveland Infants, Cleveland Spiders, and Boston Reds. He had a 3.68 ERA at the end ...

John F. or Darby O'Brien (1867–1892), American baseball pitcher *

Clinton O'Brien Clinton O'Brien (born 10 January 1974) is an Australian former professional rugby league footballer who played in the 1990s and 2000s. A Queensland State of Origin representative forward, he played club football in Australia for the Sydney Roos ...

(born 1974), Australian rugby league footballer *

Conal O'Brien Conal O'Brien (born July 18, 1956) has worked as an United States, American television Television director, director for nearly 30 years, and is a graduate of Carnegie Mellon University. He is the author of ''Birth of the Angel: The COVID Murders M ...

(born 1956), American television director *

Conan O'Brien Conan Christopher O'Brien (born April 18, 1963) is an American television host, comedian, writer, actor, and producer. He is best known for having hosted Late-night talk show, late-night talk shows, beginning with ''Late Night with Conan O'B ...

(born 1963), US comedian and talk show host * Connor O'Brien (disambiguation) or * Conor O'Brien (disambiguation), various people *

Cubby O'Brien Carl Patrick "Cubby" O'Brien (born July 14, 1946), better known by his nickname Cubby, is an American drummer and former child actor. He is known as one of the original Mouseketeers on the weekday ABC television program ''The Mickey Mouse Club'' f ...

(born 1946), American drummer and original Mouseketeer

D

* Daniel O'Brien (disambiguation), various *

Danielle O'Brien Danielle O'Brien (born 7 February 1990) is an Australian former competitive ice dancer. With partner Gregory Merriman, she is a six-time Australian senior national champion and three-time junior national champion. They have competed at the Wo ...

(born 1990), Australian ice dancer *

Danny O'Brien (disambiguation) Danny O'Brien may refer to: *Danny O'Brien (Australian rules footballer) (born 1980), former Australian rules footballer *Danny O'Brien (boxer) (1939–2001), Irish Olympic boxer *Danny O'Brien (gridiron football) (born 1990), American football qua ...

, various *

Dara Ó Briain Dara Ó Briain ( , ; born 4 February 1972) is an Irish comedian and television presenter based in the United Kingdom. He is noted for performing stand-up comedy shows all over the world and for hosting topical panel shows such as ''Mock the Wee ...

, Irish comedian and presenter *

Darcy O'Brien Darcy O'Brien (July 16, 1939, in Los Angeles, California – March 2, 1998, in Tulsa, Oklahoma) was an award-winning American author of fiction and literary criticism, most well known for his work in the genre of true crime. His first novel, ''A ...

(1939–1998), American true crime author *

Daryl O'Brien Daryl Ernest O'Brien (born 10 September 1941) is a former Australian rules footballer and coach who played 135 games for the North Melbourne in the Victorian Football League (VFL) during the 1960s. A tenacious utility player who often started ...

(b. 1941), Australian rules footballer *

Dave O'Brien (actor) Dave O'Brien (born David Poole Fronabarger; May 31, 1912 – November 8, 1969) was an American film actor, stunt man, film director, and Emmy awarded comedy writer. He was well known for his portrayal, in the 1942 serial films of the title charac ...

(1912–1969), American film actor *

Dave O'Brien (sportscaster) David O'Brien (born August 3, 1963), nicknamed "OB", is an American sportscaster who is a lead play-by-play announcer on the New England Sports Network (NESN) for telecasts of the Boston Red Sox of Major League Baseball (MLB), and for college ...

, American sportscaster * David O'Brien (disambiguation), various * Doug Brien (born 1970), American football placekicker *

Don Brien Don Brien (born September 1, 1959 in Halifax, Nova Scotia) is a Canadian sprint canoer, who competed in the mid to late 1980s. He won a bronze medal with partner Colin Shaw in the K-2 1000 m at the 1985 ICF Canoe Sprint World Championships at ...

(born 1959), Canadian sprint canoer *

Declan O'Brien Declan Timothy O'Brien (December 21, 1965 – February 16, 2022) was an American film and television writer and director. He was known as the director of three films in the ''Wrong Turn'' series (2009–2012). Biography His work with Syfy ...

(1965–2022), American film and TV writer and producer *

Declan O'Brien (footballer) Declan O'Brien (born 16 June 1979) is an Irish former professional footballer who played as a striker. He is Drogheda United's top goalscorer of all time. Playing career Drogheda United O'Brien started his professional career with Drogheda Un ...

(born 1979), with Drogheda United * Dennis O'Brien (disambiguation), various * Derek O'Brien (disambiguation), various *

Dermod O'Brien William Dermod O'Brien PRHA DL Hon RA (10 June 1865 – 3 October 1945), commonly known as Dermod O'Brien, was an Irish painter, chiefly of landscapes and portraits. His work was part of the painting event in the art competition at the ...

(1865–1906), Irish painter * Donald O'Brien (disambiguation), various *

Doug O'Brien Doug O'Brien (born February 16, 1984) is a Canadian former professional ice hockey defenceman who played five games in the National Hockey League with the Tampa Bay Lightning. Playing career O'Brien was drafted 192nd overall in the 6th round of t ...

(born 1984), Canadian ice hockey defenceman *

Dylan O'Brien Dylan Rhodes O'Brien (born August 26, 1991) is an American actor. His first major role was as Stiles Stilinski in the MTV supernatural series '' Teen Wolf'' (2011–2017). He achieved further prominence for his lead role in the science fictio ...

(b. 1991), American actor

E

Ed O'Brien Edward John O'Brien (born 15 April 1968) is an English guitarist, songwriter, and member of the rock band Radiohead. He releases solo music under the name EOB. O'Brien attended Abingdon School in Oxfordshire, England, where he formed Radiohead ...

(b. 1968), English musician *

Edmond O'Brien Eamon Joseph O'Brien (; September 10, 1915 – May 9, 1985) was an American actor of stage, screen, and television, and film director. His career spanned almost 40 years, and he won one Academy Award, two Golden Globe Awards, and two stars on th ...

(1915–1985), American actor *

Edna O'Brien Josephine Edna O'Brien (15 December 1930 – 27 July 2024) was an Irish novelist, memoirist, playwright, poet and short-story writer. O'Brien's works often revolve around the inner feelings of women and their problems relating to men and soc ...

(1930–2024), Irish novelist * Edward O'Brien (disambiguation), various *

Edwin Frederick O'Brien Edwin Frederick O'Brien (born April 8, 1939) is an American Catholic who headed the Order of the Holy Sepulchre from 2011 to 2019. He previously served as Archbishop of Baltimore from 2007 to 2011 and as Archbishop of the Military Services ...

, (born 1939), American Catholic prelate *

Eileen O'Brien (disambiguation) Eileen O'Brien may refer to: * Eileen O'Brien (actress), English actress * Eileen O'Brien (journalist) (1925-1986), Irish journalist * Eileen O'Brien (camogie), Irish camogie player * Eileen O'Brien (baseball) (1922–2015), played in the All-Amer ...

, various * Elaine O'Brien (1955–2014), American politician * Erin O'Brien (writer), American writer *

Erin Joanne O'Brien Erin O'Brien (January 17, 1934May 20, 2021) was an American actress and singer, active during the mid-twentieth century and best known as the leading lady of arguably the first made-for-TV movie in 1958, '' Girl on the Run'', which also served a ...

(1934–2021), American actress * Eugene O'Brien (disambiguation), various

F

Fergal O'Brien Fergal O'Brien (born 8 March 1972) is an Irish retired professional snooker player who competed on the World Snooker Tour from 1991 to 2024. He won one ranking title during his career, defeating Anthony Hamilton 9–7 in the final of the 1999 ...

(born 1872), Irish professional snooker player *

Fergal O'Brien (trainer) Fergal O’Brien (born 19 August 1972) is an Irish Grade 1 winning National Hunt trainer based in Gloucestershire. Background and early career O’Brien was born in Limerick, the youngest of six children. When he was four his family moved to ...

(born 1972), Irish National Hunt trainer *

Fergus O'Brien Fergus O'Brien (30 March 1930 – 19 October 2016) was an Irish Fine Gael politician who served as Government Chief Whip and Minister of State at the Department of Defence from 1981 to 1982 and 1986 to 1987 and Lord Mayor of Dublin from 1980 to ...

(1930–2016), Irish politician *

Fitz James O'Brien Fitz-James O'Brien (25 October 1826 — 6 April 1862) was an Irish Americans, Irish-American writer of works in fantasy and science fiction short stories. His career was marked by a significant contribution to the American literary scene in the m ...

(1826–1862), American SF and fantasy writer *

Flann O'Brien Brian O'Nolan (; 5 October 19111 April 1966), his pen name being Flann O'Brien, was an Civil Service of the Republic of Ireland, Irish civil service official, novelist, playwright and satirist, who is now considered a major figure in twentieth- ...

(Brian O'Nolan 1911–1966), Irish novelist and satirist

G

Gareth O'Brien Gareth "Gaz" O'Brien (born 31 October 1991) is an English professional rugby league footballer who plays as a or for the Leigh Centurions, Leigh Leopards in the Super League. He previously played for the Warrington Wolves and the Salford Red ...

(born 1991), English rugby league footballer * Geraldine O'Brien (1922–2014), Irish botanical illustrator * George O'Brien (disambiguation), various *

Ger O'Brien Gerard O'Brien (born 2 July 1984) is an Irish former professional footballer who played in the League of Ireland as a defender. He is the current Director of Football at St Patrick's Athletic, who he spent 5 seasons playing with. His former c ...

(born Gerard O'Brien, 1984), Irish footballer * Gerard O'Brien (disambiguation), various *

Geoffrey O'Brien Geoffrey O'Brien (born 1948) is an American poet, editor, book and film critic, translator, and cultural historian. In 1992, he joined the staff of the Library of America as executive editor, becoming editor-in-chief in 1998. Biography O'Brien ...

(born 1948), American poet, editor, film critic *

Glenn O'Brien Glenn O'Brien (March 2, 1947 – April 7, 2017) was an American writer who focused largely on the subjects of art, music, and fashion. He was featured for many years as "The Style Guy" in ''GQ'' magazine and published a book with that title. He ...

(1947–2017), American writer, "The Style Guy" *

Gray O'Brien Gray O'Brien (born Gerard O'Brien; 11 August 1968) is a Scottish television and film actor, best known for his portrayal of the villainous Weatherfield businessman Tony Gordon in the popular ITV soap opera ''Coronation Street'' from 2007–201 ...

(born Gerard O'Brien, 1968), Scottish actor * Gavin O'Brien (born 1993), Irish hurler

H

*Harry O'Brien, later

Héritier Lumumba Héritier Lumumba (formerly O'Brien; born 15 November 1986) is an Australian-Brazilian-Congolese former professional Australian rules footballer who played for the Collingwood Football Club and Melbourne Football Club in the Australian Football ...

(born 1986), Australian rules footballer * Harry J. O'Brien "Shorty" (1884–1955),American football, basketball, baseball coach * Helen O'Brien (1925–2005), British nightclub owner and spy * Henry O'Brien (disambiguation), various *

Hod O'Brien Walter Howard "Hod" O'Brien (January 19, 1936 – November 20, 2016) was an American jazz pianist. O'Brien was born in Chicago. He attended the Hotchkiss School and then studied at the Oberlin Conservatory and the Manhattan School of Music (1954� ...

(1936–2016), American jazz pianist *

Hugh O'Brien Hugh O'Brien (July 13, 1827 – August 1, 1895) served as the mayor of Boston from 1884 to 1888. O'Brien is notable as Boston's first Irish and Catholic mayor, having emigrated from Ireland to America in the early 1830s. O'Brien was the edito ...

(1827–1895) mayor of Boston

I

Iain O'Brien Iain Edward O'Brien (born 10 July 1976) is a former New Zealand cricket team, New Zealand cricketer, who played 22 Tests, 10 ODIs and 4 T20Is. A pace bowling, pace bowler, he took 73 test wickets with best figures of 6 for 75 against West Indi ...

(born 1976), New Zealand cricketer *

Ian O'Brien Ian Lovett O'Brien (born 3 March 1947) is an Australian breaststroke swimmer of the 1960s who won the Swimming at the 1964 Summer Olympics – Men's 200 metre breaststroke, 200 metre breaststroke at the 1964 Summer Olympics in Tokyo in wo ...

(born 1947), Australian breaststroke swimmer *

Ignatius O'Brien, 1st Baron Shandon Ignatius John O'Brien, 1st Baron Shandon, (31 July 1857 – 10 September 1930), known as Sir Ignatius O'Brien, Bt, between 1916 and 1918, was an Irish lawyer and politician. He served as Lord Chancellor of Ireland between 1913 and 1918. Early ...

(1857–1930), Lord Chancellor of Ireland, 1913–1918

J

* Jack O'Brien (disambiguation), various *

Jake O'Brien (ice hockey) Jake O'Brien (born June 16, 2007) is a Canadian junior ice hockey forward who plays for the Brantford Bulldogs in the Ontario Hockey League (OHL). He was selected eighth overall by the Seattle Kraken in the 2025 NHL entry draft. Personal life O ...

(born 2007), Canadian ice hockey player *

Jake O'Brien (fighter) Jake O'Brien (born September 25, 1984) is an American retired professional mixed martial artist who most recently competed in the Heavyweight division. A professional competitor from 2005 until 2012, he fought for the UFC, WEC, and DREAM. Back ...

(born 1984), American MMA fighter *

Jake O'Brien (footballer) Jake Patrick O'Brien (born 15 May 2001) is an Irish professional footballer who plays as a centre-back for Premier League club Everton and the Republic of Ireland national team. O'Brien began his career at Cork City, moving on loan to English ...

(born 2001), Irish footballer * James O'Brien (disambiguation), various * Jamie O'Brien (disambiguation), various *

Jeremiah O'Brien Captain Jeremiah O'Brien (1744–1818) was an American captain in the Massachusetts State Navy. (Despite the image in this article, he had light brown hair and blue eyes.Sherman, Andrew, Life of Captain Jeremiah O'Brien, 1902 at p. 20) Prio ...

(1744–1818), US Navy officer of the American Revolutionary War * Jesse O'Brien (disambiguation), various * Jim O'Brien (disambiguation), various *

Joan O'Brien Joan Marie O'Brien (February 14, 1936 – May 5, 2025) was an American actress and singer. She made a name for herself acting in television shows in the 1950s and 1960s and as a film co-star with Cary Grant, Elvis Presley, John Wayne, and Jerry ...

(1936–2025), American actress and singer * Joe O'Brien (disambiguation), various * Joey O'Brien (born 1986), Irish football player *

John O'Brien (disambiguation) John O'Brien may refer to: Public officials American * John O'Brien (Ohio politician) (1932–1985), former member of the Ohio House of Representatives * John D. O'Brien, state senator in the 1997–1998 Massachusetts legislature * John F. O ...

, various * Joseph O'Brien (disambiguation), various

K

* Kate O'Brien (disambiguation) *

Katharine O'Brien Katharine O'Brien is an American film director, screenwriter, film editor, camera operator, art director, and executive producer best known for her work on '' The Automatic Hate'' and '' Lost Transmissions''. Career She started directing, w ...

, American film director * Katharine O'Brien (disambiguation), other people of that name * Katherine O'Brien (born 1963), Canadian pediatric infectious disease physician * Kathleen O'Brien (1914–1991), Australian illustrator and fashion artist *

Katie O'Brien Katie Jill O'Brien (born 2 May 1986) is a British former professional tennis player from Beverley, Yorkshire. She was briefly the British No. 1 tennis player, and reached her career-high singles ranking of world No. 84 on 1 February ...

, British tennis player *

Keith O'Brien Keith Michael Patrick O'Brien (17 March 1938 – 19 March 2018) was a senior-ranking Catholic Church, Catholic prelate in Scotland. He was the Archbishop of Saint Andrews and Edinburgh from 1985 to 2013. O'Brien was the leader of the Catholi ...

(1938–2018), Scottish Roman Catholic prelate *

Ken O'Brien Kenneth John O'Brien Jr. (born November 27, 1960) is an American former professional football player who was a quarterback in the National Football League (NFL) for the New York Jets and Philadelphia Eagles. One of the six quarterbacks in the f ...

(born 1960), American football quarterback * Kerry O'Brien (disambiguation), various * Kevin O'Brien (disambiguation), various *

Kieran O'Brien Kieran O'Brien (born 1973) is an English actor. Early life and education Born in Oldham, Lancashire, O'Brien grew up in nearby Royton, and was educated at the Bishop Henshaw Roman Catholic Memorial High School in Rochdale. Career O'Brien began ...

(born 1973), English actor *

Kim O'Brien Kim O'Brien was an American actress active from 1974 to 1987. She played a variety of roles in movies and television shows. Filmography References External links * Kim O'Brien: Credits
at TV Guide American film actresses American te ...

, American film and television actress *

Kirsten O'Brien Kirsten Lindsey O'Brien (born 23 February 1972) is an English television, radio presenter and actress. She is best known for her work presenting for the BBC, including the popular CBBC art programme ''SMart'' from 1999 to 2009, the CBeebies pr ...

(born 1972), British TV presenter *

Kitt O'Brien Kitt O'Brien (born April 29, 1990) is an American former professional football offensive guard. He played college football for the Ball State Cardinals and signed with the Cleveland Gladiators of the Arena Football League (AFL) as an undrafted f ...

(born 1990), American football player * Kitty Wilmer O'Brien (1910–1982), Irish landscape painter

L

Larry O'Brien Lawrence Francis O'Brien Jr. (July 7, 1917September 28, 1990) was an American politician and commissioner of the National Basketball Association (NBA) from 1975 to 1984. He was one of the United States Democratic Party's leading electoral strat ...

(1917–1990), American politician *

Larry O'Brien (Canadian politician) Lawrence Robert O'Brien (born July 19, 1949) is a Canadian businessman and former politician. O'Brien served as the 58th mayor of Ottawa from 2006 until 2010. O'Brien was the founder and former Chair and CEO of Calian Technologies Ltd. O'Bri ...

(born 1949), businessman, mayor of Ottawa * Laurence O'Brien (1792–1870), Irish merchant and politician in Newfoundland * Lawrence O'Brien (disambiguation), various :* Lawrence D. O'Brien (1951–2004), Canadian politician representing Labrador * Leighton O'Brien (born 1976), American soccer player with Seattle Sounders * Lévis Brien (born 1955), Quebec politician * Leo O'Brien (disambiguation), various * Leonora O'Brien, Irish pharmacist and entrepreneur *

Leslie O'Brien Leslie Kenneth O'Brien, Baron O'Brien of Lothbury (8 February 1908 – 24 November 1995) was Governor of the Bank of England. After attending Wandsworth Grammar School in London, he joined the Bank of England in 1927 and rose through the ...

(1908–1995), Governor of the Bank of England * Leslie O'Brien (cricketer) (1905–1967), played for New South Wales * Liam O'Brien (disambiguation), various *

Lucy O'Brien Lucy O'Brien (born 13 September 1961)Author Biography, O'Brien, Lucy – She Bop: The definitive history of women in rock, pop, and soul, London: Penguin, 1995 is a British author and journalist whose work focuses on women in music. Early musi ...

(born 1961), writer on women in music *

Lucy O'Brien (philosopher) Lucy O'Brien (born 1964) is a British philosopher and the Richard Wollheim Professor of Philosophy at University College London. O'Brien predominantly works in the philosophy of mind and action, focusing in particular on self-consciousness and ...

(born 1964), at University College, London * Lucy O'Brien (doctor) (1923–2006), Irish missionary in Africa * Luke O'Brien (born 1988), English footballer with Bradford City

M

Margaret O'Brien Angela Maxine O'Brien (born January 15, 1937), known professionally as Margaret O'Brien, is an American actress. Beginning a career in feature films for Metro-Goldwyn-Mayer at age four, O'Brien became a child star and received a Juvenile Acade ...

(born 1937), American actress *

Margaret O'Brien (politician) Margaret O'Brien (born November 20, 1973) is a former member of the Michigan Senate and the Michigan House of Representatives. A member of the Republican Party, she represented a district based in Kalamazoo. Early life O'Brien was born in Ka ...

(born 1973), Michigan Republican *

Mariah O'Brien Mariah Waterfall O'Brien (born June 25, 1971) is an American interior designer and former actress and model. She made her film debut in the drama '' Gas, Food, Lodging'' (1992) and later appeared in the horror film '' Halloween: The Curse of Mich ...

(born 1971), American actress and interior designer * Mark O'Brien (disambiguation), various *

Mary Eileen O'Brien Mary Eileen O'Brien is an American academic administrator and member of the Dominican Sisters of Blauvelt. She worked as the president of the Dominican University New York from 1997 to 2024. Life O'Brien was raised in The Bronx. She earned a ...

, American academic administrator *

Matthew O'Brien (mathematician) Matthew O'Brien (1814–1855) was an Irish mathematician. Life and work O'Brien was born at Ennis (county Clare) son of a medical doctor. In 1830 he was admitted in the Trinity College, Dublin, and in 1834 in the Caius College (university ...

(1814–1855), Irish mathematician *

Maureen O'Brien Maureen O'Brien (born 29 June 1943) is an English actress and author best known for playing the role of Vicki (Doctor Who), Vicki Pallister in the BBC science fiction television series ''Doctor Who'', although she has appeared in many other te ...

(born 1943), English actress in Doctor Who series * Michael O'Brien (disambiguation), various * Michele O'Brien (born 1980), soccer coach and player for Chicago Red Eleven * Mick O'Brien (disambiguation), various * Mike O'Brien (hurler) (born 2011) with Glenroe and Limerick * Miles O'Brien (disambiguation), various * Mollie O'Brien (born 1952), folk singer from West Virginia

N

* Niall O'Brien (disambiguation), various *

Natasha O'Brien On 29 May 2022, 24-year-old Irish woman Natasha O'Brien was attacked by active-duty Irish soldier Cathal Crotty on O'Connell Street in Limerick, Ireland. Crotty was given a suspended sentence for violently assaulting O'Brien on the street aft ...

, Irish woman attacked by an active-duty Irish soldier * Nick O'Brien (born 1993), Australian rules footballer for Essendon

O

Olivia O'Brien Olivia Gail O'Brien (born November 26, 1999) is an American singer and songwriter. She rose to fame in 2016 after collaborating with Gnash (musician), Gnash on the single "I Hate U, I Love U", which peaked at number 10 on the Billboard Hot 100, ...

(born 1999), American singer and songwriter

P

* Paddy O'Brien (disambiguation), various *

Parry O'Brien William Patrick "Parry" O'Brien (January 28, 1932 – April 21, 2007) was an American shot put champion. He competed in four consecutive Summer Olympics where he won two gold medals (1952, 1956) and one silver medal ( 1960). In his last Olympic ...

(1932–2007), American shot put champion *

Patricia Salas O'Brien Patricia Salas O'Brien (also known as, Patricia Salas; Arequipa, December 6, 1958) is a Peruvian sociologist with expertise in education and social development. She served as Minister of Education of Peru from July 28, 2011, to October 31, 2013. ...

(born 1958), Peruvian sociologist and Minister of Education * 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 * Phil O'Brien (disambiguation), various

R

* Raymond O'Brien (born 1944), American Roman Catholic priest * Raymond Moulton O'Brien (1905–1977), British-born American businessman * Richard O'Brien (disambiguation), various * Riley O'Brien (born 1995), American baseball pitcher * Robert O'Brien (disambiguation), various * Ron O'Brien (disambiguation), various * Roy O'Brien (born 1974), Irish football player

S

Scott O'Brien Scott O'Brien (born June 25, 1957) is an American football coach and former player who is currently serving as an area scout for the New England Patriots of the National Football League (NFL). A former defensive end/linebacker, O'Brien served a ...

(born 1957), American football player, coach and scout * Sean O'Brien (disambiguation) *

Sean Patrick O'Brien Sean Patrick O'Brien (1988 – March 17, 2023) was an American professional wrestling referee who primarily worked on the independent circuit, notably Ohio Valley Wrestling Ohio Valley Wrestling (OVW) is an American professional wrestling pr ...

(1988–2023), American professional wrestling referee * Shane O'Brien (disambiguation), various * Shannon O'Brien (disambiguation), various *

Sicele O'Brien Sicele O'Brien (1 April 1887 – 18 June 1931) was one of Ireland's pioneering pilots. She was one of three women who raced and set records in Europe and Africa in the 1920s. She was the second woman in Britain or Ireland to get a commercial pi ...

(1887–1931), Irish woman aviation pioneer * Simon O'Brien (disambiguation), various *

Soledad O'Brien María de la Soledad Teresa O'Brien (born September 19, 1966) is an American broadcast journalist and executive producer. Since 2016, O'Brien has been the host for '' Matter of Fact with Soledad O'Brien,'' a nationally syndicated weekly talk sho ...

(born 1966), American woman television journalist *

Stephen O'Brien Sir Stephen Rothwell O'Brien, (born 1 April 1957) is a British politician and diplomat who was the United Nations Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator. O'Brien assumed office on 29 May 2015, succee ...

(born 1957), UK conservative politician for Eddisbury * Stuart O'Brien (1906–2004), American film editor * Stuart O'Brien (stage) (1833–1883), Australian actor

T

* Terence O'Brien (disambiguation), various * Thomas O'Brien (disambiguation), various * Tim O'Brien (disambiguation), various *

Timothy O'Brien (theatre designer) Timothy Brian O'Brien, RDI (8 March 1929 – 14 October 2022) was a British theatre designer. O'Brien was born in Shillong in British India. He was educated at Cambridge University from 1949 to 1952, and as a Henry Fellow and Fulbright Scholar ...

(1929–2022), British theatre designer * Timothy O'Brien (endocrinologist), Irish professor *

Timothy L. O'Brien Timothy L. O'Brien (born 1961) is an American journalist, author and television commentator. Early life and education Born in Illinois, O'Brien is a graduate of Loyola Academy and Georgetown University, where he studied literature. He has th ...

(born 1961), American journalist *

Tina O'Brien Tina Michelle O'Brien (born 7 August 1983) is an English actress. She is best known for her portrayal of Sarah Platt in the long-running ITV soap opera ''Coronation Street'' (1999–2008, 2015–present). She also appeared in the BBC One drama ...

(born 1983), English actress *

Tom O'Brien (actor) Thomas Patrick O'Brien (born April 12, 1965) has been an American actor since the age of sixteen, having first trained at the American Conservatory Theater in San Francisco, where he appeared in ACT's mainstage productions of ''The Holdup''; a ...

(b. 1965), American film actor * Tom O'Brien (American football) (b. 1948), coach at North Carolina State University * Tom O'Brien (outfielder) (1873–1901), baseball outfielder * Tom O'Brien (second baseman) (1860–1921), 19th century baseball player *

Tom O'Brien (trade unionist) Sir Thomas O'Brien (17 August 1900 – 5 May 1970) was a British trade unionist and Labour Party politician. He was also a Member of Parliament (MP) from 1945 to 1959. O'Brien worked as a stage electrician. In 1932 he replaced Hugh Roberts as ...

(1900–1970), British trade unionist and Member of Parliament *

Tommy O'Brien (baseball) Thomas Edward O'Brien (December 19, 1918 – November 5, 1978) was an outfielder/third baseman in Major League Baseball, playing mainly as a right fielder for three different teams between the and seasons. Listed at , 195 lb. O'Brien batt ...

(1918–1978), baseball outfielder

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* Una O'Brien, British civil servant

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* Vincent O'Brien (disambiguation), various *

Virginia O'Brien Virginia Lee O'Brien (April 18, 1919 – January 16, 2001) was an American actress, singer, and radio personality known for her comedic singing roles in Metro-Goldwyn-Mayer musicals of the 1940s. Life and career O'Brien primarily performed in ...

(1919–2001), American actress and comic "Frozen Face" singer

W

Walter O'Brien Walter O'Brien (born 24 February 1975) is an Irish businessman and information technologist. He was also the executive producer and loose inspiration for the television series ''Scorpion''. He is known for claiming various accomplishments, incl ...

(born 1975), Irish businessman and computer specialist * Walter A. O'Brien (1914–1998), American Progressive Party politician * William O'Brien (disambiguation), various *

Willis H. O'Brien Willis Harold O'Brien (March 2, 1886 – November 8, 1962), known as Obie O'Brien, was an American motion picture special effects and stop-motion animation pioneer, who according to ASIFA-Hollywood "was responsible for some of the best-known im ...

(1886–1962), American motion picture special effects pioneer

Z

Zach O'Brien Zachary O'Brien (born June 29, 1992) is a Canadian professional ice hockey winger currently playing with the Cardiff Devils in the Elite Ice Hockey League. Prior to turning professional, O'Brien played three seasons with the Acadie–Bathurs ...

(born 1992), professional ice hockey player

As first or middle names

* O'Brien Alston (b. 1965), American former football linebacker * O'Brien Schofield (b. 1987), American former football linebacker * O'Brien Smith (–1811), Irish-American political figure

Fictional people named O'Brien

* O'Brien, a character in George Orwell's novel ''

Nineteen Eighty-Four ''Nineteen Eighty-Four'' (also published as ''1984'') is a dystopian novel and cautionary tale by the English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final completed book. Thematically ...

'' * Lady Cassandra O'Brien, fictional character, ''

Doctor Who ''Doctor Who'' is a British science fiction television series broadcast by the BBC since 1963. The series, created by Sydney Newman, C. E. Webber and Donald Wilson (writer and producer), Donald Wilson, depicts the adventures of an extraterre ...

'' antagonist *

Chloe O'Brian Chloe O'Brian is a fictional character played by actress Mary Lynn Rajskub on the US television series '' 24''. An analyst at CTU Los Angeles (and later New York), she is Jack Bauer's most trusted colleague, often doing unconventional and unau ...

, a fictional character played by actress

Mary Lynn Rajskub Mary Lynn Rajskub () is an American actress and comedian who is best known for portraying Chloe O'Brian in the action thriller series '' 24'' and Gail the Snail in ''It's Always Sunny in Philadelphia''. Rajskub was a regular cast member on HBO' ...

on the US television series '' 24'' *

Graham O'Brien Graham O'Brien is a fictional character created by Chris Chibnall and portrayed by Bradley Walsh in the long-running British sci-fi television series ''Doctor Who''. A retired bus driver from Essex who is in remission from cancer, the character ...

, a companion of the

Thirteenth Doctor The Thirteenth Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series ''Doctor Who''. She is played by Jodie Whittaker, the first woman to portray the character, in three series, five specials and a ...

in the BBC series ''

'' *

Keiko O'Brien Keiko O'Brien (born Keiko Ishikawa) is a character in the fictional ''Star Trek'' universe, played by actress Rosalind Chao. Introduced in 1991, she is the civilian spouse of Starfleet crew member Miles O'Brien (Star Trek), Miles O'Brien (played ...

, fictional character, wife of Miles O'Brien in ''Star Trek: The Next Generation'' and ''Deep Space Nine'' * Miles O'Brien, a fictional character in ''Star Trek: The Next Generation'' and ''Deep Space Nine'' * Sarah O'Brien, a fictional character on the ITV series ''

Downton Abbey ''Downton Abbey'' is a British historical drama television series set in the early 20th century, created and co-written by Julian Fellowes. It first aired in the United Kingdom on ITV (TV network), ITV on 26 September 2010 and in the United St ...

'' *Shelia O'Brian, a character from the animated TV series ''Dungeons and Dragons'' *Mr. O'Brien, Mrs. O'Brien and Jack O'Brien, fictional characters in ''The Tree of Life'' film

As surname

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As first or middle names

Fictional people named O'Brien

See also