Mark Geoffrey Beevers (born 21 November 1989) is an English professional footballer who plays as a defender for EFL League One club Peterborough United.
Beevers was born in Barnsley, South Yorkshire. He came through the youth system at South Yorkshire club Sheffield Wednesday and was called up to the senior squad for the FA Cup third round tie with Manchester City on 7 January 2007 after impressing for the reserve team, although he was never brought off the bench. He eventually made his senior debut against Southampton on 31 January 2007 when Wednesday lost 2–1.
Beevers made his first start of the 2007–08 season in a 2–0 defeat to Leicester City on 6 October 2007. Beevers replaced the injured Michael Johnson at half time, and his excellent performance earned him the man of the match award. Beevers gained another chance in the first team on 6 November 2007 in an away game at West Bromwich Albion, who were flying high in the league and the highest scorers in the league. Beevers lined up alongside Richard Hinds in an inexperienced centre back pairing, however Beevers played with the temperament and quality of a player far beyond his years and helped to earn the Owls a 1–1 draw.