Jim Gannon (born 16 June 1977) is an Australian former professional rugby league footballer who played as a prop in the 1990s, 2000s and 2010s. Jim Gannon captained the New South Wales Under-18s to a series win. He was a Newcastle Knights junior playing Harold Matthews, SG Ball and reserve grade for the Newcastle Knights.Gannon's first-grade career began at Balmain Tigers where he made 22 appearances as a substitute in 1998 and 1999. Gannon was released from the second year of his contract with Hull Kingston Rovers to join National League One club the Widnes Vikings for the 2008 season.