[1] 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.
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.
Firpo has the fourth highest total of major honours won by a Salvadoran club, and their historical rival is Aguila.
On September 17, 1923, a group of Usulután citizens, mostly of European descent, decided to form a team that represented their community's passion for football.
Originally named Tecún Umán, the club was soon renamed in honor of Luis Ángel Firpo, a famous Argentine boxer.
The members of CD Luis Ángel Firpo acquired land near Sergio Torres creek to develop and build a stadium.
This allowed them to compete in a round robin competition for the national title against Quequeisque (Central State champion), Ferroccarril (Zona Occidente) and Juventud Olímpica.
After signing Honduran Armando Enamorado and Costa Rican Jacobo Godoy ahead of the 1955–56 season, the club finished runner up by one point to Atletico Marte.
Following this, Firpo president Gustavo Torres Cerna and nephew Sergio Torres Rivera made a collective, ambitious effort to rebuild the team; he brought quality foreign players such as Argentinian Guillermo Fisher, Brazilians Sebastian Pio da Silva, Carlos Lopez Neves and Nelson de Moraes.
In 1988 nephew Sergio Torres Rivera took over the previous president position, which would begin Firpo's true glory years.
Sergio Torres would establish a strong financial sponsorship which included renewal El Salvador conglomerate La Tapachulteca and William Handal.
This was combined with established experienced players such as Giovanni Trigueros, Nelson Rivera, Miguel Arevalo, Mauricio Cienfuegos, and Marlon Menjívar.
Finally they would send scouts down to South America, convincing Peruvian national team players Martín Duffó and Miguel Seminario to sign for the club, later stopping in Brazil to pick up Brazilian pairings Toninho dos Santos and Fernando Da Moura.
The team finished third in the regular season, but the club nonetheless dismissed Argentinian coach Juan Quarterone before the playoffs.
The following season (1990-91), The team were able to bolster their attack with the addition of Brazilian youngster Nildeson, who would later be loaned out to Atletico Marte and the hiring of Uruguayan coach Juan Carlos Masnik.
The club went on a 31 match unbeaten streak beginning with 1-1 draw with FAS on the August, 1990 and concluding on April, 1991 after a 1-0 loss to Tiburones.
After a successful campaign, Juan Carlos Masnik resigned as coach to return to Uruguay, The club will hire Yugoslavian (later Macedonian) Kiril Dojčinovski who had experience as player in red Star Belgrade and participated for Yugoslavia 1974 world cup.
The club will show their complete dominance in final, defeating Alianza 3-0 thanks to a double from Nildeson and Fernando de Moura.
Firpo won another championship in Primera División de Fútbol Profesional – Clausura 1999, beating FAS 5–4 on penalty kicks after the game ended 1-1 after extra time.
In the 2007 Apertura, Argentinian coach Horacio Cordero guided the team to another final, and they defeated FAS 5–3 in a penalty shootout.
The team won their tenth title in the 2013 Clausura under the direction of Argentinian coach Roberto Gamarra with another win over their rivals FAS.
[9] Luis Angel Firpo is historically the fourth most successful team in El Salvador football, as they have won ten championships.
Luis Ángel Firpo plays most of its home games at Estadio Sergio Torres in Usulután, better known throughout Central America as the Devil's Cauldron.
Their first logo contained a figure of a bull in honor of the "toro de las pampas" of the boxer Luis Ángel Firpo.
However, later the board of Luis Ángel Firpo decided to replace the bull with the official coat of arms which consisted of a triangle with two half circles which contained the blue and white letters of the club.
On top of the coat of arms contains stars which indicate the number of titles the team has won.. Luis Angel Firpo's shirts have been sponsored by Pilsener since 2017.