Unión Buenos Aires
Unión Buenos Aires was a Peruvian football club, located in the city of Callao.
The club was founded with the name of club Unión Buenos Aires and played in Primera Division Peruana from 1926 Peruvian Primera División until 1931 Peruvian Primera División.
The club was runner-up of the national tournament in 1927.
The club participated in the Liga Distrital de Callao until 1990.
Honours
Senior titles
| Type | Competition | Titles | Runner-up | Winning years | Runner-up years |
| National | Primera División | — | 1 | — | 1927 |
| Regional | Segunda División Regional de Lima y Callao | — | 1 | — | 1946 Serie A |
| Regional | Tercera División Regional de Lima y Callao | — | 1 | — | 1944 |
| Regional | Liga Distrital del Callao | — | 1 | — | 1980 |