| Primera RFEF Grupo 1 | Matches | W | D | L |  |
 |
 |
| home | 2 | 2 | - | - | 7 | - | - |
| away | - | - | - | - | - | - | - |
| overall | 2 | 2 | - | - | 7 | - | - |
| Primera RFEF Grupo 2 | Matches | W | D | L | |
|
|
| home | 1 | 1 | - | - | 4 | - | - |
| away | - | - | - | - | - | - | - |
| overall | 1 | 1 | - | - | 4 | - | - |
| Segunda B Grupo 2 | Matches | W | D | L | |
|
|
| home | 4 | 2 | 1 | 1 | 11 | - | - |
| away | 1 | - | - | 1 | 5 | - | - |
| overall | 5 | 2 | 1 | 2 | 16 | - | - |
| Primera RFEF Grupo 1 | Home | - | Guest | |
|
|
Results |
| 28/08/21 | Real Unión | - | Inter de Madrid | 4 | - | - | 2:1 |
| 21/04/24 | Real Unión | - | Unionistas CF | 3 | - | - | 3:1 |
| Primera RFEF Grupo 2 | Home | - | Guest | |
|
|
Results |
| 09/10/22 | Real Unión | - | SD Amorebieta | 4 | - | - | 4:3 |
| Segunda B Grupo 2 | Home | - | Guest | |
|
|
Results |
| 31/08/13 | Real Unión | - | Peña Sport FC | 3 | - | - | 2:0 |
| 08/02/14 | Real Sociedad B | - | Real Unión | 5 | - | - | 3:0 |
| 02/04/15 | Real Unión | - | SD Leioa | 4 | - | - | 1:0 |
| 08/01/17 | Real Unión | - | CD Mensajero | 2 | - | - | 0:0 |
| 31/03/19 | Real Unión | - | SCD Durango | 2 | - | - | 0:2 |
Spain