Mark Anthony Marshall (born 5 May 1987) is a Jamaican footballer who plays as a winger for EFL League One club Charlton Athletic. He began his career with non-league sides Carshalton Athletic, Grays Athletic and Eastleigh, before winning a move into the English Football League with Swindon Town in August 2008. He was loaned out to Hereford United in September 2009, before he joined Barnet in July 2010. He was a first team regular for the club before he received a two-year ban from football after he was found to have the stimulant Methylhexanamine in his system following a routine drug test on Boxing Day 2011. He returned to the game with Coventry City in February 2014, and signed with Port Vale in July 2014. A year later he switched clubs to Bradford City, and went on to be named the club's Player of the Season for the 2016–17 campaign. He joined Charlton Athletic in June 2017.