Michael William "Mike" Sleep (born March 13, 1955) is a Canadian former professional ice hockey player who played in the World Hockey Association (WHA). Drafted in the sixth round of the 1975 NHL Amateur Draft by the New York Islanders, Sleep opted to play in the WHA after being selected by the Phoenix Roadrunners in the fifth round of the 1975 WHA Amateur Draft. He played parts of two WHA seasons for the Roadrunners. Sleep was born in Montreal, Quebec, but grew up in Winnipeg, Manitoba.