Derek Landmesser (born January 27, 1975) is a Canadian former professional ice hockey player and coach who most recently served as the head coach of the Southern Professional Hockey League’s (SPHL) Mississippi RiverKings. Landmesser retired as a player following the 2010–11 CHL season, and on August 1, 2011, Landmesser was announced as the new head coach of the Mississippi RiverKings. On May 24, 2018, the Mississippi RiverKings ceased operations.