| 1. Round | 03/09/2023 | UD Logroñés | - | Athletic Club B | 0:0 | ||||
| 2. Round | 09/09/2023 | Athletic Club B | - | Utebo FC | 0:1 | ||||
| 5. Round | 30/09/2023 | Athletic Club B | - | CD Valle de Egüés | 3:1 |  |
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| 11. Round | 11/11/2023 | Athletic Club B | - | Barakaldo CF | 2:1 | ||||
| 12. Round | 19/11/2023 | CD Calahorra | - | Athletic Club B | 0:1 | |
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| 14. Round | 03/12/2023 | Náxara CD | - | Athletic Club B | 1:2 | ||||
| 15. Round | 09/12/2023 | Athletic Club B | - | Real Sociedad C | 3:0 |  |
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| 16. Round | 17/12/2023 | SD Gernika | - | Athletic Club B | 1:1 | |
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| 17. Round | 06/01/2024 | Athletic Club B | - | CD Brea | 3:0 |
Guinea-Bissau
Spain