C.D. Luis Ángel Firpo

Club Deportivo Luis Ángel Firpo (often abbreviated to Firpo) is an El Salvador professional association football club based in Usulután.

The club is the second-oldest in El Salvador and was founded as Tecún Umán on September 17, 1923, by a group of local citizens in Usulután. It was soon renamed in honor of Argentine boxer Luis Ángel Firpo, who became the first Latin American to fight for the heavyweight championship, knocking Jack Dempsey out of the ring on September 14, 1923.

Firpo has played at their home ground, Estadio Sergio Torres, since 1930. The team's mascot is the bull, a reference to Firpo, who was known as the Wild Bull of the Pampas. The club's traditional kit colours are white and red, blue is also used but it is less predominant. The colours were adopted from the Argentine side San Lorenzo de Almagro, of which Luis Ángel Firpo was a supporter.

Some of the most prominent players from El Salvador, including Mauricio Cienfuegos and Raúl Díaz Arce, have played for L.A. Firpo. The team has won a total of ten Primera Division Champions championships, the first coming in 1988–89 and the most recent in the 2013 Clausura. The club's most successful period was between 1988 and 2000, when they won the league title seven times. Firpo has the fourth highest total of major honours won by a Salvadoran club, and their historical rival is Aguila.