The National Hockey League is formed, with the Montreal Canadiens, Montreal Wanderers, Ottawa Senators, Quebec Bulldogs, and Toronto Arenas as its first teams.

The National Hockey League is a professional ice hockey league in North America composed of 32 teams, 25 in the United States and 7 in Canada. The NHL is one of the major professional sports leagues in the United States and Canada and is considered the premier professional ice hockey league in the world. The Stanley Cup, the oldest professional sports trophy in North America, is awarded annually to the league playoff champion at the end of each season. The International Ice Hockey Federation (IIHF) views the Stanley Cup as one of the "most important championships available to the sport". The NHL is headquartered in Midtown Manhattan.

The Montreal Canadiens, officially Club de hockey Canadien and colloquially known as the Habs, are a professional ice hockey team based in Montreal. The Canadiens compete in the National Hockey League (NHL) as a member of the Atlantic Division in the Eastern Conference. Since 1996, the team has played its home games at the Bell Centre, originally known as the Molson Centre. The Canadiens previously played at the Montreal Forum, which housed the team for seven decades and all but their first two Stanley Cup championships.

The Montreal Wanderers were an amateur, and later professional, ice hockey team based in Montreal. The team played in the Federal Amateur Hockey League (FAHL), the Eastern Canada Amateur Hockey Association (ECAHA), the National Hockey Association (NHA) and briefly the National Hockey League (NHL). The Wanderers were four-time Stanley Cup winners. Prior to the formation of the NHL, the "Redbands" were one of the most successful teams in ice hockey.

The Ottawa Senators were an ice hockey team based in Ottawa, which existed from 1883 to 1954. The club was the first hockey club in Ontario, a founding member of the National Hockey League (NHL) and played in the NHL from 1917 until 1934. The club, which was officially the Ottawa Hockey Club, was known by several nicknames, including the Generals in the 1890s, the Silver Seven from 1903 to 1907 and the Senators dating from 1908.