William Edward McCreary Sr. (December 2, 1934 – November 25, 2019) was an ice hockey left winger, coach and general manager.
After stepping down as coach of the Golden Seals he served as their general manager from 1975 to 1977, including their first year as the Cleveland Barons.
During his pro career, McCreary played for the New York Rangers, Detroit Red Wings, Montreal Canadiens and the St. Louis Blues.
He later coached the Vancouver Canucks for the first half of the 1973–74 season and then became general manager of the California Golden Seals in August 1974.
His son Bill McCreary Jr. played 12 games in the NHL with the Toronto Maple Leafs during the 1980–81 season.