| 1. Round | 13/08/2023 | FC Cartagena | - | CD Eldense | 0:1 | ||||
| 2. Round | 18/08/2023 | FC Andorra | - | FC Cartagena | 3:2 | ||||
| 3. Round | 25/08/2023 | FC Cartagena | - | Levante UD | 0:1 | ||||
| 4. Round | 02/09/2023 | Villarreal CF B | - | FC Cartagena | 1:2 | ||||
| 5. Round | 10/09/2023 | FC Cartagena | - | Real Zaragoza | 1:3 |  |
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| 6. Round | 16/09/2023 | Real Valladolid | - | FC Cartagena | 1:0 | ||||
| 9. Round | 05/10/2023 | FC Cartagena | - | Espanyol Barcelona | 0:2 | ||||
| 12. Round | 23/10/2023 | AD Alcorcón | - | FC Cartagena | 1:1 | ||||
| 14. Round | 05/11/2023 | FC Cartagena | - | CD Leganés | 0:3 | ||||
| 15. Round | 13/11/2023 | Real Oviedo | - | FC Cartagena | 1:1 | ||||
| 17. Round | 26/11/2023 | CD Tenerife | - | FC Cartagena | 1:1 | ||||
| 21. Round | 21/12/2023 | SD Huesca | - | FC Cartagena | 3:0 | ||||
| 22. Round | 14/01/2024 | FC Cartagena | - | Villarreal CF B | 4:1 | ||||
| 23. Round | 21/01/2024 | Racing Santander | - | FC Cartagena | 0:2 | ||||
| 24. Round | 27/01/2024 | FC Cartagena | - | SD Amorebieta | 1:0 | ||||
| 27. Round | 16/02/2024 | Real Zaragoza | - | FC Cartagena | 1:2 | ||||
| 28. Round | 25/02/2024 | FC Cartagena | - | Elche CF | 0:1 | ||||
| 42. Round | 02/06/2024 | Espanyol Barcelona | - | FC Cartagena | 3:0 |
Spain