Club Universitario de Deportes, popularly known as Universitario or simply as La "U", is a Peruvian football club based in Lima. The club was founded in 1924 under the name Federación Universitaria by students of the National University of San Marcos but was forced to rename in 1931. Since 1928, the club competes in the top tier of Peruvian football, the Torneo Descentralizado. In 2000, they opened the 80,000-capacity stadium Estadio Monumental, currently the largest stadium in Peru and second-largest in South America, retiring their smaller Estadio Teodoro Lolo Fernández. Universitario and Alianza Lima participate in the Peruvian Clásico, which has its roots in the club's first participation in the Primera División in 1928. It also has rivalries with Sporting Cristal, Deportivo Municipal, and Sport Boys.

Football is the most popular sport in Peru. Football/soccer in Peru was introduced by British immigrants, Peruvians returning from Great Britain, and by English sailors in the later half of the 19th century during their frequent stops at the port of Callao, which at that point was considered one of the most important ports of the Pacific Ocean. According to the work entitled La Difusión del Fútbol en Lima, during the last decade of the 19th century, records show that sailors were known to practice sports such as football/soccer and played against teams made up of Englishmen, Peruvians, or a mix between Englishmen and Peruvians.