| 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 | ||||
| 7. Round | 22/09/2023 | FC Cartagena | - | SD Eibar | 1:2 | ||||
| 8. Round | 01/10/2023 | SD Amorebieta | - | FC Cartagena | 0:0 |  |
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| 9. Round | 05/10/2023 | FC Cartagena | - | Espanyol Barcelona | 0:2 | ||||
| 10. Round | 08/10/2023 | Racing Ferrol | - | FC Cartagena | 1:1 | ||||
| 16. Round | 19/11/2023 | FC Cartagena | - | Albacete | 1:1 | ||||
| 26. Round | 11/02/2024 | FC Cartagena | - | CD Mirandés | 1:0 | ||||
| 27. Round | 16/02/2024 | Real Zaragoza | - | FC Cartagena | 1:2 | |
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| 28. Round | 25/02/2024 | FC Cartagena | - | Elche CF | 0:1 | ||||
| 31. Round | 15/03/2024 | CD Eldense | - | FC Cartagena | 0:0 | ||||
| 32. Round | 23/03/2024 | FC Cartagena | - | FC Andorra | 1:0 | ||||
| 35. Round | 13/04/2024 | Sporting Gijón | - | FC Cartagena | 1:0 | ||||
| 40. Round | 19/05/2024 | SD Eibar | - | FC Cartagena | 1:0 | ||||
| 41. Round | 26/05/2024 | FC Cartagena | - | SD Huesca | 0:2 |
Spain