Atlético Madrid C

In 1972, both a C-team of Atlético Madrid and Amorós were founded separately, with the former club being named Club Atlético de Madrid Aficionados and the latter club being named Asociación de Padres de Alumnos Colegio Amorós. In 1976, Atlético Madrid Aficionados was renamed Atlético Madrileño Club de Fútbol Aficionado, and ceased activities in 1985 after three seasons in Tercera División. Amorós was renamed Club Polideportivo Colegio Amorós in 1989, and was incorporated into Atlético's structure in 1994; officially named Club Polideportivo Amorós, the club was known as Atlético Amorós. In 2000, the club was renamed Club Atlético Aviación and adopted Atlético's colors and logo. In 2005, Atlético Aviación changed its name to Club Atlético de Madrid C. In April 2015, after the relegation of Atlético Madrid B to the fourth division, Atleti C ceased activities. On 1 July 2024, CU Collado Villalba reached a ten-year agreement with Atlético Madrid to become their second reserve team; for the 2025–26 season onwards, the club will be fully incorporated into Atleti's structure and will be replaced by Atlético C. On 19 June 2025, Collado Villalba was officially absorbed by Atleti; their Tercera Federación spot went to Atlético C, while their youth sides remained under the name of Club Atlético Villalba.