Keith Sullivan is an Australian former professional darts player.

This biography of a living person does not include any references or sources. (January 2021)

Sullivan played in three BDO World Darts Championships. In 1991, he defeated future world champion Raymond van Barneveld in the first round, but lost to Alan Warriner in round two. In 1992 he defeated Peter Evison 3–1 in the first round but was defeated by Rod Harrington 3–2 in the second round. In 1993, he lost in the first round to Bobby George. He also played in the Winmau World Masters twice, in 1991 where he lost in the first round to Dave Kelly, and in 1992 where he beat Peter Locke to progress into the second round where he was beaten by Kevin Spiolek. He won the 1991 Australian Grand Masters and reached the semi-final of the 1991 British Open.