John O'Neill may refer to:
Music John O'Neill (guitarist) (born 1957), Northern Irish guitarist of rock band The Undertones John O'Neill (musician, born 1926) (1926–1999), British singer, whistler, and trumpeter
Politics John O'Neill (Canadian politician) (1858–1922), Liberal politician in Ontario, Canada John O'Neill (congressman) (1822–1905), U.S. Representative from Ohio and state senator John O'Neill (Fenian) (1834–1878), member of the Irish Republican Brotherhood (Fenians) John O'Neill (Irish senator) (died 1941), Irish senator in 1925 John O'Neill (philosopher), political philosopher, professor of political economy at the University of Manchester John O'Neill (political activist) (born 1946), fervent opponent of John Kerry and a leader of the groups Swift Vets and POWs for Truth John O'Neill (Wisconsin politician) (1830–?), Wisconsin state assemblyman John O'Neill, 1st Viscount O'Neill (1740–1798), Irish politician John O'Neill, 3rd Viscount O'Neill (1780–1855), Irish Tory politician John A. O'Neill (died 1892), American steel engraver and mayor of Hoboken, New Jersey John J. O'Neill (American politician) (1846–1898), Missouri congressman John Joseph O'Neill (British politician) (1888–1953), Liberal Party politician in England, member of parliament for Lancaster 1923–1924 John Raymond O'Neill (1891–1951), Conservative member of the Canadian House of Commons St John O'Neill (1741–1790) represented Randalstown in the Irish House of Commons
Sports John O'Neill (Australian rules footballer) (born 1935), Geelong player during the 1950s John O'Neill (baseball), baseball player John O'Neill (field hockey) (born 1968), American former field hockey player John O'Neill (footballer, born 1935) (1935–2012), Republic of Ireland and Preston North End player John O'Neill (footballer, born 1958), Northern Ireland player John O'Neill (footballer, born 1974), former Scottish football player with Queen of the South and former manager of Stirling Albion John O'Neill (rugby league) (1943–1999), Australian rugby league footballer and coach John O'Neill (rugby union, born 1973), Irish rugby union player John O'Neill (rugby union, born 1932), Australian rugby union player John O'Neill (Limerick hurler), from the 1994 All-Ireland Senior Hurling Championship final John O'Neill (Tipperary hurler) (born 1990), Irish hurler John O'Neill (runner), American steeplechase runner, 2nd at the 1925 USA Outdoor Track and Field Championships Jonjo O'Neill (horse racing) (John Joseph O'Neill, born 1952), Irish jockey
Other John O'Neill, architect who oversaw the completion of St Peter's Cathedral, Belfast John O'Neill (businessman) (born 1951), CEO of the Australian Rugby Union and former head of Football Federation Australia John O'Neill (editor), founding editor of Black Gate (magazine) John O'Neill (lighthouse keeper) (1768–1838), American military officer and lighthouse keeper John O'Neill (poet) (1777–1854), Irish shoemaker poet and playwright John O'Neill (VC) (1897–1942), Scottish recipient of the Victoria Cross during the First World War John O'Neill (video game designer) (born 1948), experimental art video game designer John O'Neill, 3rd Earl of Tyrone (died 1641), the son of Hugh O'Neill John Johnston O'Neill (1886–1966), Canadian geologist and academic John Joseph O'Neill (journalist) (1889–1953), winner of the Pulitzer Prize for Reporting John P. O'Neill (1952–2001), former FBI agent and head of security at the World Trade Center at the time of the September 11, 2001 attacks John S. O'Neill (born 1979), British molecular biologist John Michael O'Neill, Canadian Roman Catholic bishop John O'Neill (sociologist), Canadian sociologist, phenomenologist, and social theorist
See also John O'Neal (disambiguation) John O'Neil (disambiguation) Jack O'Neill (disambiguation)