Mark Offerdahl (born 15 October 1987) is a United States international rugby league footballer who plays for and coaches his hometown club the Goondiwindi Boars in Australia. Primarily playing as a , he can also play as a or . He was a member of the USA squad for both the 2013 and 2017 World Cups. He has previously played for AS Carcassonne, in France, North Wales Crusaders, in Wales, and London Broncos, Oxford and Sheffield Eagles, in England.