John "Jack" McLean (January 31, 1923 — October 14, 2003) was a Canadian ice hockey player who played for the Toronto Maple Leafs for three seasons, from 1942–43 until 1944–45. He scored the game-winning goal at the 10:18 mark of the fourth overtime period against the Detroit Red Wings on March 23, 1943 - one of the longest games in Stanley Cup playoffs history. Jack was part of the Toronto Maple Leafs' Stanley Cup championship in 1944–45. After moving to Ottawa in 1946, Jack joined the Ottawa Senators of the Quebec Senior Hockey League, and helped the team reach the Allan Cup final in 1948.