John Andrew O'Kane (born 15 November 1974) is an English former professional footballer who played as a defender. He started his career with Manchester United but failed to break into the first team, and after loan spells with Wimbledon, Bury and Bradford City, he made a permanent move to Everton in January 1998. There he found first-team opportunities easier to come by, but a change of manager at the end of the 1997–98 season meant he fell out of favour again and was sent on loan to Burnley at the start of the 1998–99 season. He went on loan again to Bolton Wanderers at the start of 1999–2000, a move that was made permanent a month later.