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| 1st(1st leg) | RC Celta B | - | CD Eldense | 3:2 (2:1) | ||
| 2nd (2nd leg) | CD Eldense | - | RC Celta B | 2:0 (0:0) | ||
| 1st(1st leg): 03/06/2023 16:00 | 2nd (2nd leg): 10/06/2023 18:00 | Winner: CD Eldense | ||||
| 1st(1st leg) | Real Sociedad B | - | AD Alcorcón | 1:2 (0:1) | ||
| 2nd (2nd leg) | AD Alcorcón | - | Real Sociedad B | 1:1 (0:0) | ||
| 1st(1st leg): 03/06/2023 18:00 | 2nd (2nd leg): 10/06/2023 18:00 | Winner: AD Alcorcón | ||||
| 1st(1st leg) | FC Barcelona B | - | Real Madrid Castilla | 4:2 (2:1) | ||
| 2nd (2nd leg) | Real Madrid Castilla | - | FC Barcelona B | 3:0 (1:0) | ||
| 1st(1st leg): 03/06/2023 20:00 | 2nd (2nd leg): 11/06/2023 19:00 | Winner: Real Madrid Castilla | ||||
| 1st(1st leg) | Deportivo La Coruña | - | CD Castellón | 1:0 (0:0) | ||
| 2nd (2nd leg) | CD Castellón | - | Deportivo La Coruña | 4:3 (2:1) aet | ||
| 1st(1st leg): 04/06/2023 18:00 | 2nd (2nd leg): 11/06/2023 17:00 | Winner: Deportivo La Coruña | ||||
