This article is a list of teams that play in one of the six major sports leagues in the United States and Canada: the Canadian Football League (CFL), Major League Baseball (MLB), Major League Soccer (MLS), the National Basketball Association (NBA), the National Football League (NFL) and the National Hockey League (NHL).
Est. represents the first year the team played in its current media market. For brevity, only the most recent names for teams that have had multiple nicknames in their current media market are listed. Future expansion teams whose inaugural seasons are confirmed are also included in this list.
The NHL becomes the first of the four major North American professional sports leagues to put a team in Las Vegas.