Mark Edmonson (born 3 November 1979 in Heysham, in the City of Lancaster) is an English former rugby league footballer of the 1990s and 2000s. Edmondson played either front row or back row positions.
He played for Vale of Lune RUFC and St Helens from 1997 to 2005. He played several matches in the NRL for the Sydney Roosters. While with St Helens he won a Challenge Cup winners' medal and claimed two super league titles.
He returned home to play for Salford in 2007 after his time spent down under in the NRL. His time in the NRL did not see him gain much on-field game time following a bad shoulder dislocation. His time at Salford was not one to remember either after another shoulder dislocation and an ankle injury—ironically received in a tackle from former Sydney team mate Adrian Morley. That year saw Salford demoted to National League One.
Edmondson signed for the Castleford Tigers on the 30th of October 2007 on a one year deal. However, after failing a stringent club medical, Edmondson was forced to retire from rugby league at the age of 28. Mark is now a personal trainer and life coach and resides in Kingscliff, Australia