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)
John Thomas O'Neil (October 4, 1898 – March 25, 1950) was an American rugby union player who competed in the 1920 Summer Olympics and 1924 Summer Olympics.
He was a member of the American rugby union team, which won the gold medal at t ...
(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
John Jordan "Buck" O'Neil Jr. (November 13, 1911 – October 6, 2006) was a first baseman and manager in the Negro American League, mostly with the Kansas City Monarchs. After his playing days, he worked as a scout and became the first Africa ...
(1911–2006), American baseball player
Fictional characters
*
Mr. John O'Neil, a ''
Teenage Mutant Ninja Turtles'' character
See also
*
John O'Neill (disambiguation)
*
John O'Neal (disambiguation)
{{hndis, Oneil, John