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.

Offerdahl was born in Goondiwindi, Queensland, Australia, and is of American descent through his father, a native of Madison, Wisconsin who served in the United States Army.

He played for the Manly Sea Eagles at a junior level, and also spent time with the Easts Tigers in the Queensland Cup, AS Carcassonne in the French Elite One Championship,[5] and the Connecticut Wildcats in the AMNRL.

On finishing his two-year contract with Broncos, Offerdahl signed a one-year deal with fellow Championship outfit the Sheffield Eagles.

As well as being co-owner, Mark took over head coach/player responsibilities for New York Freedom for their inaugural 2021 season in the new North American Rugby League[16] Offerdahl now lives in Austin, Texas, USA and owns CrossFit Uncommon.