Gary William Aldcorn (born March 7, 1935) is a Canadian former professional ice hockey left winger who played 226 games in the National Hockey League for the Boston Bruins, Detroit Red Wings, and Toronto Maple Leafs between 1956 and 1961.

Over his NHL career, Aldcorn scored 41 regular-season goals and one goal in the Stanley Cup playoffs.

Internationally Aldcorn played for the Canadian national team at the 1965 World Championships.

Before his career in the NHL, Aldcorn won the 1954 Allan Cup national senior ice hockey championship as a member of the Winnipeg Maroons, then won the 1955 Memorial Cup national junior ice hockey championship as a member of the Toronto Marlboros.