John Cartwright (born 9 August 1965) is the assistant coach of the Manly-Warringah Sea Eagles in the NRL and an Australian former professional rugby league footballer and former head coach.
He was the head coach for the Gold Coast Titans.
A "strong running and skilful passing" Australian international and New South Wales State of Origin representative second-row forward, Cartwright played his club football with the Penrith Panthers, winning the 1991 premiership with them.