Matt Welsh, Australian swimmer
Matthew James Welsh, OAM (born 18 November 1976) is an Australian swimmer who is the former world champion in the backstroke and butterfly. He took two golds in 50-metre butterfly and 50-metre backstroke, during one hour, at the World Championships in Shanghai 2006. Welsh retired from professional swimming in March 2008 when he failed to secure a place in the team for the Beijing Olympics.