List of American and Canadian cities by number of major professional sports franchises

This is a list of metropolitan areas in the United States and Canada categorized by the number of major professional sports franchises in their metropolitan areas.

The major professional sports leagues, or simply major leagues, in the United States and Canada are the highest professional competitions of team sports in the two countries. Although individual sports such as golf, tennis, and auto racing are also very popular, the term is usually limited to team sports.

The term "major league" was first used in 1921 in reference to Major League Baseball (MLB), the top level of professional American baseball. Today, the major northern North America professional team sports leagues are Major League Baseball (MLB), the National Basketball Association (NBA), the National Football League (NFL), and the National Hockey League (NHL).

These four leagues are also commonly referred to as the Big Four. Each of these is the richest professional club competition in its sport worldwide. The best players can become cultural icons in both countries and elsewhere in the world, because the leagues enjoy a significant place in popular culture in the U.S. and Canada. The NFL has 32 teams, and the others have 30 each, although the NHL will expand in its 2017–18 season with the Vegas Golden Knights in Las Vegas, Nevada, a market the Big Four had historically avoided because of Las Vegas' reputation of being a hub for illegal gambling. The vast majority of major league teams are concentrated in the most populous metropolitan areas of the United States.

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