List_of_people_with_surname_O'Neill
This is a list of people with surname O'Neill, including the variant spellings O'Neil and O'Neal.
For the history and derivation of the surname O'Neill, see O'Neill (surname). For other uses, see O'Neill (disambiguation).
Look up O'Neill in Wiktionary, the free dictionary.
A
- Alan O'Neill (footballer, born 1957), Irish football player
- Alan O'Neill (footballer, born 1973), Irish football player
- Alexander O'Neal (born 1953), American musician
- Alexandre O'Neill (1924–1986), Portuguese writer
- Alexander O'Neill aka Alexx O'Nell (born 1980), American musician and actor
- Amber O'Neal (born 1974), American professional wrestler
- Amos O'Neal, American politician
- Amy O'Neill (born 1971), an actress/performer
- Ana María O'Neill, an educator, author and advocate of women's rights
- Andrew O'Neill (born 1979), English vegan, anarchist, transvestite, stand-up comedian, musician and writer
- Anthony O'Neill (born 1964), Australian fiction writer
- Aisling O'Neill, Irish actress
- April O'Neil, a fictional character in the Teenage Mutant Ninja Turtles franchise
- Arthur Joseph O'Neill (1917–2013), an American bishop of the Roman Catholic Church
- Arthur O'Neill (1876–1914), was an Irish Ulster Unionist Party politician
- Arturo O'Neill (1736–1814), an Irish-born colonel who served the Spanish crown as governor of several places in New Spain (1781–1794)
B
- Barbara O'Neil, an American film and stage actress
- Bernie O'Neill (politician), member of the Pennsylvania House of Representatives
- Bernie O'Neill (bowls), Northern Irish lawn bowler
- Bernie O'Neill (Gaelic footballer) (born 1945), Irish Gaelic footballer
- Bill O'Neill (1880–1920), a Canadian-born Major League Baseball player
- Billy O'Neill (rugby) (1878–1955), a Welsh international rugby union player
- Billy O'Neill (footballer), an Irish professional footballer
- Birch O'Neal (c. 1913–1995), FBI/CIA agent
- Brendan O'Neill (businessman) (born 1948), a British business executive
- Brendan O'Neill (journalist), an English journalist
- Brian O'Neill (ice hockey, born 1929), a Canadian executive within the National Hockey League
- Brian O'Neill (ice hockey, born 1988), American ice hockey player
- Brian O'Neill (1574), chief of the O'Neills of Clanaboy, surrendering his title to Sir Philip Sidney for a knighthood in 1567
- Brian O'Neill (superintendent) (1941–2009), an American superintendent of the Golden Gate National Recreation Area
- Brian O'Neill (American football) (born 1995), American football player
- Bryan O'Neil (1905–1954), British archaeologist and historian
- Buckey O'Neill (1860–1898), an American soldier, sheriff, newspaper editor, miner, politician, gambler and lawyer
- Byron O'Neill (born 1970), an American artist
C
- Calvin O'Neal, American football linebacker
- Carol O'Neal (born 1948), American model and Playboy magazine's Playmate of the Month in July 1972
- Catherine O'Neill (cricketer), New Zealand-born Irish cricketer
- Charles Duncan O'Neal (1879–1936), Barbados politician and physician
- Charles O'Neal (1904–1996), American film and television screenwriter
- Christopher John O'Neill, Broadway actor
- Chris O'Neill, Irish animator and YouTuber
- Connor O'Neill, fictional Northern Irish character in the Australian soap opera Neighbours
- C. William O'Neill (1916–1978), American politician
- Carlos O'Neill (1760–1835), titular head of the Clanaboy O'Neill dynasty
- Cecily O'Neill, authority on Process drama and the arts in education
- Charles O'Neill (musician), Canadian bandmaster and composer
- Charles O'Neill (engineer) (1828–1900), Australasian engineer, inventor, parliamentarian and philanthropist
- Charles H. O'Neill (c. 1800–1897), Irish-born American politician and mayor
- Charles O'Neill (Pennsylvania politician) (1821–1893), American politician
- Charles O'Neill, 1st Earl O'Neill (1779–1841), British politician, peer and landowner
- Chloe Ann O'Neil (1943–2018), New York politician
- Christopher O'Neill (born 1974), British-American businessman and the husband of Princess Madeleine of Sweden
- Cian O'Neill, Irish Gaelic footballer, coach and manager
- Colm O'Neill (born 1964), Irish sportsperson
- Colm O'Neill (born 1988), Irish sportsperson
- Con O'Neill (actor) (born 1966), British actor
- Con O'Neill (diplomat) (1912–1988), British civil servant and diplomat
- Conn (Constantine) O'Neill, titular head of the Clanaboy O'Neill dynasty
D
- Dave O'Neal (1937–2021), American politician, Lieutenant Governor of Illinois
- Deltha O'Neal (born 1977), American football player
- Damian O'Neill (born 1961), lead guitarist in the pop-punk band, The Undertones
- Dan O'Neill (born 1942), American underground cartoonist
- Dan O'Neill (writer), American journalist and writer
- Daniel O'Neill (painter) (1920–1974), Irish Romantic painter
- Daniel O'Neill (editor), Irish-born American newspaper editor and owner
- Daria O'Neill (born 1971), American radio and television personality
- Darren O'Neill, an Irish boxer
- Dennis O'Neill (disambiguation), several people
- Dermot O'Neill (disambiguation), several people
- Diarmuid O'Neill (1969–1996), English-born volunteer in the Provisional Irish Republican Army
- Dick O'Neill (1928–1998), American stage, film and television actor
- Don O'Neill (artist), American watercolorist and architect
- Donal O'Neill, Gaelic footballer for Galway
- Douglas F. O'Neill (born 1968), American Thoroughbred horse trainer
E
- Eamon O'Neill (born 1944), Northern Irish nationalist politician in Northern Ireland
- Eamonn O'Neill (died 3 November 1954), Irish Cumann na nGaedhael and later Fine Gael party politician
- Edward O'Neill (disambiguation), several people
- Ed O'Neill (born 1946), American actor
- Ed O'Neal (1936–2022), American musician, of the Dixie Melody Boys
- Edward J. O'Neill (general) (1902–1979), American US Army officer
- Edward L. O'Neill (1903–1948), American politician
- Edward O'Neill, 2nd Baron O'Neill (1839–1928), arish peer and politician
- Eliza O'Neill (1791 – 29 October 1872), Irish actress, later baronetess
- Elizabeth O'Neill Verner (1883–1979), artist, author and lecturer
- Ella O'Neill, mother of playwright Eugene O'Neill and wife of actor James O'Neill
- Emmett O'Neill (1918–1993), American Major League Baseball pitcher
- Eric O'Neill (born 1973), American former American FBI operative
- Eugene M. O'Neill (1850–1926), Irish-born American lawyer and newspaper owner
- Eugene O'Neill (hurler) (born 1978), Irish sportsperson
- Eugene O'Neill (1888–1953), American playwright, and Nobel laureate in Literature
- Eunan O'Neill (born 1982), Northern Irish television presenter
- Evan O'Neill Kane (1861–1932), surgeon working in Pennsylvania, US
- Edward Asbury O'Neal (1818–1890), American Confederate general during the American Civil War
- Emmet O'Neal (1853–1922), American Democratic politician who was Governor of Alabama
F
- Frank O'Neal, American cartoonist
- Frederick O'Neal (1905–1992), American actor and television director
- Fabián O'Neill (born 1973), Uruguayan former football midfielder
- Felim O'Neill of Kinard, Irish nobleman who led the Irish Rebellion of 1641 in Ulster
- Francis O'Neill (1848–1936), Irish-born American police chief and author of several Irish music collections
- Frank "Buck" O'Neill (1875–1958), American head football coach
- Frank O'Neill (footballer) (born 1940), Irish footballer
G
- Gail O'Neill, American model and television journalist
- Gary O'Neill, various people
- Gene O'Neill, American novelist
- George Bernard O'Neill (1828–1917), Irish genre painter
- George O'Neill (footballer, born 1942) (born 1942), Scottish footballer who played and managed in the US in his later career
- George O'Neill (footballer, born 1923) (1923–2003), English footballer
- Gerard K. O'Neill (1927–1992), American scientist
- Gerard M. O'Neill (1942–2019), American journalist and writer
- Griffin O'Neal (born 1964), American actor
- Gwendolyn O’Neal (born 1946), American academic administrator and home economist
H
- Harriet O'Neill, American judge
- Harry O'Neill (disambiguation), several people
- Heather O'Neill (born 1973), Canadian novelist, poet, short story writer, screenwriter and journalist
- Henrique O'Neill, 1st Viscount of Santa Mónica, Portuguese noble and politician
- Henry O'Neill (disambiguation), several people
- Howard S. O'Neill (1883–1966), American politician and lawyer
- Hugh McShane O'Neill, Irish nobleman and rebel in the 16th and 17th centuries
- Hugh O'Neill (disambiguation), several people
- Hugo José Jorge O'Neill (1874–1940), Portuguese nobleman
I
- Isabelle Ahearn O'Neill (1880–1975), stage and screen actor and Rhode Island legislator
- Ivan O'Neal, Vincentian political leader
J
- Jack O'Neill, a fictional character in the Canadian-American SyFy television series Stargate SG-1
- Jamie O'Neal (born Jamie Murphy, 1968), Australian country singer and songwriter
- Jermaine O'Neal (born 1978), American NBA basketball player
- Jim O'Neal (born 1948), American blues expert, writer, record producer and record company executive
- Joseph T. O'Neal, American politician
- Johnny O'Neal, American jazz pianist
- Jack O'Neill (baseball) (1873–1935), Irish-American baseball catcher
- Jack O'Neill (businessman) (1923–2017), American businessman
- Jack O'Neill (disambiguation)
- Jacquie O'Neill (born 1969), English illustrator
- James O'Neill (disambiguation), several people
- Jamie O'Neill (born 1962), Irish authoer
- Jamie O'Neill (snooker player), English snooker player
- Jan Lehane (born 1941), married name O'Neill, Australian tennis player
- Jeff O'Neill (born 1976), Canadian broadcaster and former ice hockey player
- Jeffrey O'Neill (disambiguation), several people
- Jennifer O'Neill, American actress and model
- Jevon O'Neill, British film director and producer
- Jim O'Neill (disambiguation), several people
- Jimmy O'Neill (footballer, born 1931) (1930–2007), Irish football goalkeeper
- Jimmy O'Neill (footballer, born 1941), Northern Irish footballer
- João O'Neill
- João Pedro Torlades O'Neill
- Joaquim Torlades O'Neill
- Joe O'Neill, English footballer
- John Johnston O'Neill (1886–1966), Canadian geologist and academic
- John Joseph O'Neill (journalist) (1889–1953), American journalist
- John Joseph O'Neill (British politician) (1888–1953), English Liberal MP
- John Joseph O'Neill (American politician) (1846–1898), U.S. Representative from Missouri
- John O'Neill (disambiguation), several people
- John Raymond O'Neill, Canadian politician
- Jonjo O'Neill (jockey) (born 1952), Irish National Hunt racehorse trainer and jockey
- Jorge Maria O'Neill
- Jorge Torlades O'Neill I
- Jorge Torlades O'Neill II
- José Carlos O'Neill
- José Maria O'Neill
- Joseph O'Neill (disambiguation), several people
- Julian O'Neill (New Zealand rugby league), New Zealand rugby league footballer who played in England
- Julian O'Neill, Australia rugby league footballer
- Juliet O'Neill, Canadian journalist
K
- Kathleen O'Neal Gear (born 1954), American writer
- Kate Tenforde (née O'Neill; born 1980), American long-distance runner
- Katie O'Neill, illustrator and writer from New Zealand
- Keith O'Neill (disambiguation), several people
- Ken O'Neal (born 1962), American football player
- Kevin O'Neill (disambiguation), several people
- Kim L. O'Neill, Irish biologist in the United States
- Kitty O'Neil (1946–2018), American stuntwoman and racer
L
- Leslie O'Neal (born 1964), American football player
- Laurence O'Neill, Irish politician
- Lawrence Joseph O'Neill, American judge
- Lawrence O'Neill (disambiguation), several people
- Linda O'Neill, Australian soccer player
- Louis O'Neill, American diplomat and attorney
- Luke O'Neill (disambiguation), several people
M
- Madeline O'Neill (born 1867/68), British tennis player
- Maggie O'Neill, British actress
- Máire O'Neill (born 1978), Irish data encryption academic
- Maire O'Neill (1886– 1952), Irish actress
- Margaret O'Neill Eaton (1799–1879), wife of John Eaton, involved in the Petticoat Affair
- María de Mater O'Neill (born 1960), Puerto Rican artist, designer and educator
- Maria O'Neill, Portuguese member of the Clanaboy O'Neill dynasty
- Mark O'Neill (disambiguation), several people
- Martha Mary O'Neill, aka 'Mother Patricia', Irish-Australian Sister of Charity
- Martin O'Neill, Baron O'Neill of Clackmannan
- Martin O'Neill, Northern Irish footballer and manager
- Marty O'Neill (born 1965), Canadian lacrosse player and manager
- Mary Auguste O'Neill
- Mary Devenport O'Neill, Irish poet
- Mary O'Neill (Canadian politician), Canadian politician
- Mary-Anne O'Neill, Australian politician
- Mary Lovelace O'Neal, American artist
- Mary Thomas O'Neal (1887 – after 1974), Welsh-born American labor activist
- Maston E. O'Neal Jr. (1907–1990), American politician
- Matthew O'Neill (disambiguation), several people
- Maurice O'Neill (Irish republican), (d.1942), Executed Irish Republican
- Melinda O'Neal, American conductor of choral music
- Merlin O'Neill (1898–1981), Commandant of the United States Coast Guard 1950 to 1954
- Michael O'Neill (disambiguation), several people
- Michelle O'Neill, Irish politician, deputy First Minister of Northern Ireland since 2020, Vice President of Sinn Féin since 2018
- Mike O'Neal (born 1951), Kansas Republican politician
- Mildred O'Neill (1914? – 2003), wife of Speaker of the United States House of Representatives Tip O'Neill
- Moira O'Neill, pseudonym of Agnes Shakespeare Higginson (1864–1955), Irish-Canadian poet
- Morgan O'Neill, Australian writer, director, actor and producer
N
- Nathan O'Neill, Australian cyclist
- Nicholas O'Neill (disambiguation), several people
- Norm O'Neill, Australian cricketer
- Norman O'Neill (1875–1934), English composer and conductor
O
- Onora O'Neill, Baroness O'Neill of Bengarve
- Oona O'Neill, American actress
- Owen Roe O'Neill (c.1585 – 1649), Gaelic Irish soldier
- O'Neal Compton (1951–2019), American film and television actor
- O'Neill Donaldson (born 1969), English footballer
- O'Neill Spencer (1909–1944), American jazz drummer and singer
- Sir Neil O'Neill, Irish chieftain
P
- Patrice O'Neal (1969–2011), American comedian
- Patrick O'Neal (disambiguation), several people
- Peggy O'Neal (disambiguation), several people
- Pete O'Neal (born 1940), American Black Panther Party member
- Pat O'Neill (disambiguation), several people
- Patrick O'Neill (disambiguation), several people
- Paul O'Neill (disambiguation), several people
- Pauline O'Neill (disambiguation), several people
- Pearse O'Neill, Irish Gaelic footballer
- Peggy O'Neil (1898–1960), Irish-American actress
- Peter O'Neill, former prime minister of Papua New Guinea
- Phelim (Felix) O'Neill
- Phelim Caoch O'Neill (1517–1542), prince of the Cenél nEógain
- Phelim O'Neill, 2nd Baron Rathcavan
R
- Raiqwon O'Neal (born 2000), American football player
- Ralph Ambrose O'Neill, American flying ace from World War I
- Rebecca O'Neill (born 1981), New Zealand football player
- Richard O'Neill (disambiguation), several people
- Riley O'Neill (born 1985), Canadian soccer player
- Robert O'Neal (American football) (born 1971), former American football cornerback
- Robert O'Neal (murderer) (1961–1995), American white supremacist and convicted murderer executed in Missouri
- Robert O'Neill (disambiguation), several people
- Robin O'Neil, British historian
- Rose O'Neill (1874–1944), American illustrator
- Ryan O'Neill (American soccer player) (born 1978), American soccer midfielder
- Ryan O'Neill (Northern Irish footballer) (born 1990), Northern Irish footballer
- Ralph T. O'Neal (1933–2019), British Virgin Islands politician
- Reagan O'Neal, one of several pseudonyms of James Oliver Rigney Jr (1948–2007), American writer
- Ronan O'Neill, Irish Gaelic footballer
- Ron O'Neal (1937–2004), American actor, director and screenwriter
- Rose O'Neal Greenhow (1817–1864), Confederate spy
- Ryan O'Neal (born 1941), American actor
S
- Séamus Ó Néill (1910–1986), Irish writer
- Shareef O'Neal (born 2000), American basketball player and son of Shaquille
- Shaquille O'Neal (born 1972), American basketball player
- Stanley O'Neal (born 1951), American business executive
- Steve O'Neal (born 1946), American football punter
- Seán O'Neill (born 1938), Northern Irish Gaelic footballer
- Sean O'Neill (table tennis) (born 1967), American table tennis player and coach
- Shane O'Neill (Irish chieftain) (c. 1530–1567), Irish chief of the O'Neill clan of Ulster
- Shane O'Neill (Irish exile) (c. 1599 – 29 January 1641), youngest son of Hugh O'Neill, Earl of Tyrone
- Shane O'Neill (Cork hurler) (born 1986), Irish sportsperson
- Shannon O'Neill (comedian), American comedian
- Shannon O'Neill (politician) (born 1937), Canadian politician
- Sharon O'Neill (born 1952), New Zealand singer-songwriter and pianist
- Sid O'Neill (1888—1915), Australian rules footballer
- Simon O'Neill (born 1971), New Zealand-born operatic tenor
- Stephen O'Neill (born 1980), Irish Gaelic footballer
- Steve O'Neill (1891–1962), American catcher, manager, coach and scout in Major League Baseball
- Steve O'Neill (owner) (1899–1983), American owner of a professional baseball team
- Steve O'Neill (rugby league) (born 1958), English rugby league footballer
- Susie O'Neill (born 1973), Australian swimmer
T
- Tara Lynne O'Neill, Northern Irish actress
- Ted O'Neill, Dean of Admissions at the University of Chicago
- Terence O'Neill, Baron O'Neill of the Maine (1914–1990), the fourth Prime Minister of Northern Ireland
- Terry O'Neill (feminist) (born c. 1953), American attorney, professor and activist for social justice
- Terry O'Neill (martial artist) (born 1948), English actor and martial artist
- Terry O'Neill (photographer) (1938–2019), English photographer
- Thomas Newman O'Neill Jr. (1928–2018), American federal judge
- Thomas O'Neill (journalist) (1904–1971), American journalist
- Thomas O'Neill (Canadian politician) (1882–1965), Canadian politician
- Thomas P. O'Neill III (born 1945), American politician
- Tim O'Neill (Canadian football) (born 1979), Canadian football player
- Timothy O'Neill (soccer) (born 1982), American soccer player
- Tip O'Neill (1912–1994), American politician
- Tip O'Neill (baseball) (1858–1915), Canadian left fielder in Major League Baseball
- Titus O'Neil (born 1977; real name Thaddeus Bullard), American professional wrestler
- Todd O'Neill (born 1982), American singer
- Tom O'Neill (ice hockey) (1923–1973), Canadian ice hockey player
- Tommy O'Neill (born 1955), Scottish football midfielder
- Tony O'Neill, New York-based musician and author
- Tatum O'Neal (born 1963), American actress
- Tirlough Brassileagh Ó Neill, son of Phelim Caoch O'Neill, Prince of the Cenél nEógain
- Turlough Luineach Ó Neill (1532–1595), Irish earl of the Clan-Connell, inaugurated as the King of Tyrone
- Ty O'Neal (born 1978), American actor
W
- Ward O'Neill (born 1951), Australian illustrator, caricaturist and cartoonist
- Wes O'Neill (born 1986), Canadian ice hockey player
- Willa O'Neill, New Zealand actress
- William O'Neill (Connecticut politician) (1930–2007), American Governor of Connecticut
- William O'Neill (Ohio jurist) (born 1947), American lawyer, jurist and appellate judge
- William O'Neill, 1st Baron O'Neill (1813–1883), Anglo-Irish hereditary peer, clergyman and musical composer
- William T. O'Neil (1850–1909), New York politician
- William J. O'Neil, American entrepreneur, stockbroker and writer
- William O' Neil (1848–?), member of the Wisconsin Legislature
Y
- Yvonne O'Neill (1936–2010), Canadian politician