Allan Eugene Sims (born April 18, 1953) is a Canadian former professional hockey player and head coach in the National Hockey League (NHL). He played ten seasons in the NHL between 1973 and 1983 with the Boston Bruins, Hartford Whalers, Los Angeles Kings. After retiring he turned to coaching, and remained in this role from 1988 to 2016 in various minor leagues. Sims also served as the head coach of the San Jose Sharks in the NHL during the 1996-97 season.