1904 establishments in Argentina

Neuquén (Mapudungun: Nehuenken) is the capital city of the Argentine province of Neuquén and of the Confluencia Department, located in the east of the province. It occupies a strip of land west of the confluence of the Limay and Neuquén rivers which form the Río Negro, making it part of the ecoregion of Alto Valle del Río Negro. The city and surrounding area have a population of more than 340,000, making it the largest city in Patagonia. Along with the cities of Plottier and Cipolletti, it is part of the Neuquén – Plottier – Cipolletti conurbation.

Club Atlético San Telmo is an Argentine sports club located in the neighbourhood of San Telmo, in the City of Buenos Aires. The club is mostly known for its football team, which currently plays in Primera Nacional, the second division of the Argentine football league system.

Club Ferro Carril Oeste, known simply as Ferro Carril Oeste or familiarly, Ferro, is an Argentine sports club from the neighbourhood of Caballito, Buenos Aires. Although many activities are hosted by the club, Ferro is mostly known for its football team, which plays in the Primera Nacional, the second division of the Argentine football league system.

The Juan B. Ambrosetti Museum of Ethnography (Spanish: Museo Etnográfico "Juan B. Ambrosetti") is an Argentine museum overseen by the University of Buenos Aires Faculty of Philosophy and Letters and located in Buenos Aires.

The Compañía General de Ferrocarriles en la Provincia de Buenos Aires (CGBA) (in French: "Compagnie générale de chemins de fer dans la Province de Buenos Aires") was a French–owned company, formed in 1904, which operated a metre-gauge railway network in Argentina.

Club Atlético Barracas Central is an Argentine professional football club from the district of Barracas, Buenos Aires. Established in 1904, Barracas Central returned to the Primera División, the top level of the Argentine football league system, in the 2022 season after the team won the Torneo Reducido.

Club Atlético 9 de Julio (mostly times referred as 9 de Julio de Rafaela) is an Argentine football club from the city of Rafaela in Santa Fe Province. The squad currently plays in Torneo Argentino B, which is the regionalised third tier of the Argentine Football Association league system.

Club Atlético Atlanta is an Argentine sports club from the Villa Crespo district of Buenos Aires. Nicknamed Los Bohemios ('The Bohemians'), Atlanta is mostly known for its football team, although the institution also hosts the practise of basketball, boxing, martial arts, handball and roller skating. The squad currently plays at Primera B Nacional, the second division of the Argentine football league system.

Asociación Atlética Argentinos Juniors is an Argentine sports club based in La Paternal, Buenos Aires. The club is mostly known for its football team, which currently plays in the Argentine Primera División, and was recognized as one of the most important football teams of South America by FIFA. It is one of the eight Argentine first division teams that have won the Copa Libertadores. The continental trophy was won in the club's first entry to the contest, in 1985.

Club Gimnasia y Esgrima de Rosario (familiarly known for its acronym GER) is an Argentine multi-sports club from Rosario, Santa Fe. Water polo is the section that has won the most titles for the institution, with 21 championships as of 2012.