is an English coach and former player who is currently the manager of National League side Forest Green Rovers.

Cotterill, a striker, had a nine-year career as a footballer playing for Burton Albion, Wimbledon, Brighton & Hove Albion and AFC Bournemouth before deciding to take up football management. He began with Irish side Sligo Rovers and after a year he returned to England and took over at his home town club, Cheltenham Town. He did well at Whaddon Road guiding the club from the sixth tier to the third in five years. His success at Cheltenham led to Stoke City appointing him as their manager prior to the 2002–03 season.

After 13 games as manager, he left to become assistant manager to Howard Wilkinson at Sunderland only to be dismissed from this post with Wilkinson in March 2003 after 27 games in the role. He joined Burnley in June 2004. After three years at Turf Moor he moved on to have a short spell at Notts County in 2010 and spent a season-and-a-half at cash-strapped Portsmouth. In October 2011 he was appointed manager at Nottingham Forest guiding the club out of a relegation battle. He was dismissed by Forest in July 2012 after the club was taken over by the Al-Hasawi family. In January 2013, he joined Queens Park Rangers' coaching staff remaining until the end of the 2012–13 season. Cotterill was appointed manager of Bristol City in December 2013, taking them to the Championship before being dismissed in January 2016. He was manager of Championship club Birmingham City from September 2017 to March 2018.