John O'Neil may refer to:
- John O'Neil (painter) (1915–2004), American painter and writer
- John O'Neil (footballer) (born 1971), Scottish footballer
- John O'Neil (rugby union) (1898–1950), American rugby union player
- John O'Neil (rugby league), English rugby league footballer who played in the 1950s and 1960s
- John O'Neil (baseball) (1920–2012), American baseball player
- John G. A. O'Neil (1937–1992), American politician from New York
- John O'Neil (priest), Irish Anglican priest
- John E. O'Neil IV, U.S. Army officer
- John Jordan O'Neil, better known as Buck O'Neil (1911–2006), American baseball player
Fictional characters
- Mr. John O'Neil, a Teenage Mutant Ninja Turtles character
See also
Topics referred to by the same termThis disambiguation page lists articles about people with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: