| 3. Round | 24/02/1929 | Arenas de Getxo | - | Real Unión | 1:1 | ||||
| 4. Round | 03/03/1929 | Real Unión | - | Atlético Madrid | 1:2 | ||||
| 5. Round | 10/03/1929 | CE Europa | - | Real Unión | 3:3 | ||||
| 6. Round | 24/03/1929 | Real Unión | - | Athletic Club | 6:3 | ||||
| 7. Round | 31/03/1929 | Real Madrid | - | Real Unión | 2:0 |  |
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| 8. Round | 07/04/1929 | Real Unión | - | Real Sociedad | 2:3 | ||||
| 9. Round | 21/04/1929 | Real Unión | - | FC Barcelona | 1:2 | ||||
| 10. Round | 28/04/1929 | Real Unión | - | Espanyol Barcelona | 4:3 | ||||
| 11. Round | 05/05/1929 | Racing Santander | - | Real Unión | 1:3 | ||||
| 14. Round | 12/05/1929 | Real Unión | - | Arenas de Getxo | 7:1 | ||||
| 12. Round | 19/05/1929 | Atlético Madrid | - | Real Unión | 3:1 | ||||
| 13. Round | 26/05/1929 | Real Unión | - | CE Europa | 2:3 | ||||
| 18. Round | 23/06/1929 | FC Barcelona | - | Real Unión | 4:1 |
Spain