Karri McMahon (born 27 February 1992) is an Australian field hockey player for the Hockeyroos who plays as a defender.McMahon was a member of the Australia women's national field hockey team that were defeated by the Netherlands women's national field hockey team in the final of the 2014 Women's Hockey World Cup, a Gold Medal winner at the 2014 Commonwealth Games and member of the team that went to the 2016 Summer Olympics.