As in previous years, the preliminary round of the Spanish cup will only involve 20 regional sides. Matches will take place over two legs on or around 26 September and 3 October. (30.06.26)
First leg results were as follows:
| Lebrijana | 5-0 | CD 6 de Junio |
| Atlético Calatayud | 2-0 | Baztán |
| CD Anaitasuna | 5-0 | Tedeón |
| Ribadesella | 1-0 | Noja |
| UD Pinatar | 8-0 | Atlético Melilla |
| Hortaleza | 1-0 | Atlético Unión Güímar |
| Auriense | 2-0 | CD San José |
| Sant Rafael | 1-5 | AE Prat |
| Talayuela | 1-2 | Alcázar |
| Maracena | 1-1 | UE Tavernes |
Second leg results were as follows (aet - after extra time, pso - penalty shoot out, teams qualifying in bold):
| CD 6 de Junio | 1-2 | Lebrijana |
| Baztán | 1-2 | Atlético Calatayud |
| Tedeón | 2-5 | CD Anaitasuna |
| Noja | 1-1 | Ribadesella |
| Atlético Melilla | 0-3 | UD Pinatar |
| Atlético Unión Güímar | 3-3 (aet) |
Hortaleza |
| CD San José | 1-0 | Auriense |
| AE Prat | 5-0 | Sant Rafael |
| Alcázar | 1-0 | Talayuela |
| UE Tavernes | 0-0 (4-2 pso) |
Maracena |