Unión Popular de Langreo is a Spanish football team based in Langreo, in the autonomous community of Asturias. Founded in 1961 after the merge of CP La Felguera and Club Langreano, it plays in Tercera División - Group 2, holding home games at Estadio Nuevo Ganzábal in La Felguera, with a capacity of 4,024 seats.

Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Langreo, (Asturian Llangréu), officially Llangréu / Langreo is a municipality and town of northern Spain, province of The Principality of Asturias. It is the 4th largest town of Asturias with 45.000 inhabitants.

In the neighbourhood fruit and cider are produced, and there are important coal mines, foundries, and factories for the manufacture of coarse cloth. In the past, it was one of the most important mining and metallurgical points of Spain since the XVIII century, and also it was well known because of workers struggles and culture. The 3th railway of the Iberian Peninsula was the FC of Langreo. Because of the Spanish "Industrial Conversion", Langreo lost his industrial importance, but today it conserves important factories like Bayer, where is produced the 100% acetylsalicylic acid of the German enterprise.

The largest town is Langreo (43,000 inhabitants), formed by the most important districts: La Felguera (20.000), Sama (10.000), and Riaño, Ciaño, Lada and Barros.

Langreo has important medieval monuments like the church of San Esteban, the Quintana Tower or the Sanctuary of Carbayu. Today Langreo preserves good examples of industrial heritage and it hosts the Siderurgy Museum Of Asturias and the art gallery Pinacoteca Eduardo Úrculo.