John Yems (born London, 28 August 1959) is an English professional football manager, who was most recently manager of Crawley Town.
Yems has had coaching roles at Fulham and Millwall before, in 2006, he was appointed as one of three joint caretaker managers at Crawley Town following the sacking of John Hollins. Yems was sacked at the end of that season, and then joined Grays Athletic, initially as chief scout and becoming first team coach in October 2007. He left the club by mutual consent in January 2008. Yems was appointed as assistant manager at Exeter City in February 2008, but left in July 2009, since he lived in Sussex and did not wish to relocate. In October 2009, Yems took on a scouting role for Torquay United. Following a spell as a coach at Gillingham, Yems was appointed as football operations manager by Bournemouth in 2012, remaining until 2018, when the club stated that they could not afford to keep him.