Marcus Anthony Myers-Harness (born 24 February 1996) is a footballer who plays as a winger for League One club Portsmouth.
He made his competitive first team debut for Burton Albion in September 2013, at the age of 17.
He helped the club to win the League Two title in the 2014–15 season, and then had loan spells at Ilkeston and Aldershot Town, before he helped Burton to win promotion out of League One in 2015–16.
He joined Port Vale on loan for the 2017–18 season.