John Muckler (April 13, 1934 – January 4, 2021) was a Canadian professional hockey coach and executive. He was a manager and executive for many National Hockey League (NHL) teams. He had been a part of five Stanley Cup championships. He managed the Minnesota North Stars, Edmonton Oilers, Buffalo Sabres, New York Rangers, Ottawa Senators and Phoenix Coyotes. Muckler was born in Midland, Ontario.