| 14. Round | 12/11/2016 | Sestao River | - | Real Sociedad B | 1:4 | ||||
| 22. Round | 21/01/2017 | Real Unión | - | Real Sociedad B | 2:2 |  |
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| 23. Round | 28/01/2017 | Real Sociedad B | - | SD Amorebieta | 1:0 | ||||
| 27. Round | 25/02/2017 | Real Sociedad B | - | Rayo Majadahonda | 4:0 | |
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| 31. Round | 25/03/2017 | Real Sociedad B | - | Athletic Club B | 1:0 | ||||
| 32. Round | 02/04/2017 | Barakaldo CF | - | Real Sociedad B | 1:2 | ||||
| 33. Round | 09/04/2017 | Real Sociedad B | - | Sestao River | 0:0 | ||||
| 34. Round | 15/04/2017 | Arenas de Getxo | - | Real Sociedad B | 1:1 | ||||
| 35. Round | 22/04/2017 | Real Sociedad B | - | UD Logroñés | 0:2 | ||||
| 38. Round | 14/05/2017 | CD Mensajero | - | Real Sociedad B | 2:1 |
Spain