Head to Head
| Spain Segunda B Group 2 | 2016/05/15 16:00 | Real Unión v Leioa | L | 0-1 |
| Spain Segunda B Group 2 | 2016/01/02 17:00 | Leioa v Real Unión | W | 0-2 |
| Spain Segunda B Group 2 | 2015/04/02 16:00 | Real Unión v Leioa | W | 1-0 |
| Spain Segunda B Group 2 | 2014/11/15 15:00 | Leioa v Real Unión | L | 1-0 |
Home History
| Spain Segunda B Group 2 | 2016/09/25 16:00 | Gernika v Real Unión | D | 2-2 |
| Spain Segunda B Group 2 | 2016/09/17 14:00 | Real Unión v Amorebieta | W | 1-0 |
| Spain Segunda B Group 2 | 2016/09/11 14:00 | Real Unión v Albacete | D | 0-0 |
| Spain Segunda B Group 2 | 2016/09/04 16:00 | Real Sociedad B v Real Unión | D | 1-1 |
| Spain Copa del Rey | 2016/08/31 19:00 | Albacete v Real Unión | L | 2-1 |
| Spain Segunda B Group 2 | 2016/08/27 18:00 | Real Unión v Real Madrid B | W | 1-0 |
| Spain Segunda B Group 2 | 2016/08/21 11:00 | Mensajero v Real Unión | D | 1-1 |
| Europe Friendlies | 2016/07/19 17:00 | Real Unión v Eibar | L | 0-1 |
Away History
| Spain Segunda B Group 2 | 2016/09/24 14:00 | Leioa v Real Sociedad B | W | 1-0 |
| Spain Segunda B Group 2 | 2016/09/18 15:00 | Real Madrid B v Leioa | L | 1-0 |
| Spain Segunda B Group 2 | 2016/09/11 09:30 | Leioa v Mensajero | W | 2-0 |
| Spain Segunda B Group 2 | 2016/09/04 15:00 | Navalcarnero v Leioa | W | 0-2 |
| Spain Segunda B Group 2 | 2016/08/27 17:00 | Leioa v UD San Sebastian Reyes | W | 3-0 |
| Spain Segunda B Group 2 | 2016/08/21 17:00 | UD Logrones v Leioa | D | 1-1 |
| Club Friendly List | 2016/08/10 17:00 | Leioa v Aurrera de Vitoria | W | 2-0 |
| Spain Segunda B Play-Offs | 2016/05/29 16:00 | Leioa v Olímpic de Xativa | W | 4-1 |