Nixon Putt (born 3 March 1996) is a Papua New Guinean professional rugby league footballer who plays as a second-row forward for the Castleford Tigers in the Super League and Papua New Guinea at international level.
He has previously played for the Central Queensland Capras, the Norths Devils and the PNG Hunters in the Queensland Cup. He has spent time on dual registration from Castleford at Newcastle Thunder in League 1. He has represented the PNG Kumuls at international level, as part of the 2017 and 2021 squads for the Rugby League World Cup.