John O'Connor
John O'Connor may refer to:
Religious figures
- John Joseph O'Connor (cardinal) (1920–2000), eleventh bishop of the Roman Catholic Archdiocese of New York
- John Joseph O'Connor (bishop of Newark) (1855–1927), fourth bishop of the Roman Catholic Archdiocese of Newark
- John O'Connor (priest) (1870–1952), British Catholic priest, model for the fictional detective Father Brown
Politicians
- John J. O'Connor (1885–1960), former U.S. Representative from New York
- John O'Connor (Canadian politician) (1824–1887), Canadian politician
- John O'Connor Power (1846–1919), Irish politician
- John O'Connor (MP, KC) (1850–1928), Irish politician
- John O'Connor (Lord Mayor of Dublin) (c. 1835–1891), Lord Mayor of Dublin and MP for South Kerry
- John S. O'Connor (1896–1967), Irish Fianna Fáil politician
Sportsmen
- Johnny O'Connor (born 1980), Irish rugby union player
- Johnny O'Connor (baseball) (1891–1982), Major League Baseball player
- Johnny O'Connor (hurler) (1928–2010), Irish sportsperson
- John O'Connor (English cricketer) (1867–1936), cricketer
- John C. O'Connor (1878–1922), American college football coach
- John O'Connor (Wexford hurler) (born 1965), retired Irish sportsperson
- John O'Connor (Cork hurler), Irish sportsperson
Musicians
- John O'Connor (musician) guitarist, TV composer and recording artist from London
- John O'Conor (born 1947), Irish pianist
Others
- John Jay O'Connor (1930–2009), American lawyer and husband of United States Supreme Court Justice Sandra Day O'Connor
- John J. O'Connor (journalist) (1933–2009), American journalist and critic
- John O'Connor (painter) (1830–1889), Irish painter
- John J. O'Connor (mathematician), maintainer of the MacTutor History of Mathematics archive
See also
- Jon O'Connor (born 1976), retired English footballer
- Carroll O'Connor, American actor born "John O'Connor"
- Jack O'Connor (disambiguation)
- John Connor (disambiguation)
- John Conner (disambiguation)