 Athletic de Bilbao B |
| Founded: | 1898 |
| Official website: | www.athletic-club.net |
| E-mail: | prensa@athletic-club.net |
| Manager: | Jokin ARAMBARRI |
| Name: | Instalaciones de Lezama |
| Capacity: | 2,000 |
| Primera Federación 2025/26 | |
|
| 27-Feb-2026 | 1a Fed (26) | Lugo | 1-0 | Athletic B |
| 08-Mar-2026 | 1a Fed (27) | Athletic B | 1-1 | Arenas de Getxo |
| 15-Mar-2026 | 1a Fed (28) | Osasuna Promesas | 0-1 | Athletic B |
| 20-Mar-2026 | 1a Fed (29) | Athletic B | 1-1 | Mérida |
| 29-Mar-2026 | 1a Fed (30) | Celta Fortuna | 2-1 | Athletic B |
| 04-Apr-2026 | 1a Fed (31) | Athletic B | 1-2 | Talavera |
| 10-Apr-2026 | 1a Fed (32) | Cacereño | 1-0 | Athletic B |
| 19-Apr-2026 | 1a Fed (33) | Athletic B | 0-1 | Racing Ferrol |
| 26-Apr-2026 | 1a Fed (34) | Unionistas | - | Athletic B |
| 03-May-2026 | 1a Fed (35) | Athletic B | - | Ourense CF |
| 10-May-2026 | 1a Fed (36) | Pontevedra | - | Athletic B |
| 17-May-2026 | 1a Fed (37) | Athletic B | - | Guadalajara |
| 24-May-2026 | 1a Fed (38) | Ponferradina | - | Athletic B |
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