The Toronto Maple Leafs (officially the Toronto Maple Leaf Hockey Club and often referred to as the Leafs) are a professional ice hockey team based in Toronto. They compete in the National Hockey League (NHL) as a member of the Atlantic Division in the Eastern Conference. The club is owned by Maple Leaf Sports & Entertainment, a company that owns several professional sports teams in the city. The Maple Leafs' broadcasting rights are split between BCE Inc. and Rogers Communications. For their first 14 seasons, the club played their home games at the Mutual Street Arena, before moving to Maple Leaf Gardens in 1931. The Maple Leafs moved to their present home, Scotiabank Arena (originally named Air Canada Centre), in February 1999.
The club was founded in 1917, operating simply as Toronto and known then as the Toronto Arenas. Under new ownership, the club was renamed the Toronto St. Patricks in 1919. In 1927, the club was purchased by Conn Smythe and renamed the Maple Leafs. A member of the "Original Six", the club was one of six NHL teams to have endured the period of League retrenchment during the Great Depression. The club has won 13 Stanley Cup championships, second only to the 24 championships of the Montreal Canadiens. The Maple Leafs history includes two recognized dynasties, from 1947 to 1951; and from 1962 to 1967. Winning their last championship in the 1966–67 season, the Maple Leafs' 56-season drought between championships is the longest drought in league history, surpassing the previous record held by the New York Rangers, going into the 2023–24 season. The Maple Leafs have developed rivalries with four NHL franchises: the Boston Bruins, Detroit Red Wings, the Montreal Canadiens, and the Ottawa Senators. However, they have a minor geographic rivalry with a fifth NHL franchise: the Buffalo Sabres.
The Maple Leafs have retired the use of 13 numbers in honour of 19 players, including the first in professional sports. In addition, several individuals who hold an association with the club have been inducted into the Hockey Hall of Fame.