Club León, also known as León, is a Mexican professional football club based in León, Guanajuato, Mexico.

León won titles including the Liga MX, México Primera División (Mexico First Division) title seven times in 1948, 1949, 1952, 1956, 1992; Apertura in 2013; and Clausura in 2014. After winning the League and the México Cup in 1949, it became the first Mexican campeonísimo. León was the CONCACAF Champions' Cup runner-up in 1993. It is the only second Liga MX team to win back-to-back championships in the short tournament format.

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 División since 2002. It failed to reach the Primera División 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, León reached the Primera División after defeating Correcaminos UAT.

In the Apertura 2013, it won the championship by defeating América 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 Latinoamérica in Mexico and Telemundo Deportes in the U.S. Since 2016, Univision Deportes holds the U.S. broadcasting rights to León home games.

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