Club Leon, also known as Leon, is a Mexican professional football club based in Leon, Guanajuato, that competes in the Liga MX, the top flight of Mexican football.

Leon has won the Primera Division de Mexico/Liga MX title eight times in 1948, 1949, 1952, 1956, 1992, the Apertura in 2013, the Clausura in 2014, and the Apertura in 2020. After winning the League and the Mexico Cup in 1949, it became the first Mexican campeonisimo. Leon was the CONCACAF Champions' Cup runner-up in 1993. It is the second-only Mexican club to win back-to-back championships.

The club qualified for the Champion's Cup in 1998 until it was eliminated in the semi-final. The team has been a consistent contender for the Primera Division since 2002. It failed to reach the Primera Division due to a series of mediocre performances in the playoffs despite good plays during the regular season until the 2012 Clausura tournament. Ten years later, Leon reached the Primera Division after defeating Correcaminos UAT. In the Apertura 2013, it won the championship by defeating America with a score of 5–1 which earned it its sixth championship star. In Clausura 2014, it became champion for the second year in a row by defeating Pachuca with 4–3, giving it its seventh championship star and the title of "bicampeones". In recent years, Club Leon has attracted a non-Spanish speaking football fanbase and managed to secure new Spanish-language broadcast partnerships with Fox Sports Latinoamerica in Mexico and Telemundo Deportes in the U.S. Since 2016, Univision Deportes holds the U.S. broadcasting rights to Leon home games.

Leon is ranked No. 29 in the IFFHS Central and North America's best clubs of the 20th century.

This page also has a version in other languages:  Леон (russian)