| 2019-07-26 18:00:14July 26, 2019 | Bilbao Athletic 4-2 Amorebieta | 4 - 2 | Friendly | 2019/2020 | Lezama | Recap |
| 2019-07-30 11:00:05July 30, 2019 | Bilbao Athletic 1-1 Arenas Club | 1 - 1 | Friendly | 2019/2020 | Lezama | Recap |
| 2019-08-03 19:30:57August 3, 2019 | Haro Deportivo 1-1 Bilbao Athletic | 1 - 1 | Friendly | 2019/2020 | El Mazo | Recap |
| 2019-08-07 19:30:47August 7, 2019 | Numancia 2-2 Bilbao Athletic | 2 - 2 | Friendly | 2019/2020 | Los Pajaritos | Recap |
| 2019-08-10 10:00:56August 10, 2019 | Oyonesa 0-4 Bilbao Athletic | 0 - 4 | Friendly | 2019/2020 | Estadio de Oion Arena | Recap |
| 2019-08-10 12:00:34August 10, 2019 | Alavés B 0-1 Bilbao Athletic | 0 - 1 | Friendly | 2019/2020 | Estadio de Oion Arena | Recap |
| 2019-08-14 19:00:44August 14, 2019 | Leioa 2-2 Bilbao Athletic | 2 - 2 | Friendly | 2019/2020 | Sarriena | Recap |
| 2019-08-17 19:00:41August 17, 2019 | Barakaldo 2-0 Bilbao Athletic | 2 - 0 | Friendly | 2019/2020 | Lasesarre | Recap |
| 2019-08-25 18:00:10August 25, 2019 | Haro 1-4 Bilbao Athletic | 1 - 4 | Segunda B | 2019/2020 | El Mazo | Recap |
| 2019-08-31 18:00:58August 31, 2019 | Bilbao Athletic 0-0 Calahorra | 0 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-09-08 19:00:40September 8, 2019 | Cultural Leonesa 5-2 Bilbao Athletic | 5 - 2 | Segunda B | 2019/2020 | Reino de León | Recap |
| 2019-09-11 19:30:28September 11, 2019 | Zalla 0-2 Bilbao Athletic | 0 - 2 | Friendly | 2019/2020 | Landaberri | Recap |
| 2019-09-14 18:00:39September 14, 2019 | Bilbao Athletic 4-0 Salamanca CF | 4 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-09-22 17:00:07September 22, 2019 | Tudelano 0-3 Bilbao Athletic | 0 - 3 | Segunda B | 2019/2020 | Ciudad de Tudelano | Recap |
| 2019-09-29 18:30:34September 29, 2019 | Bilbao Athletic 5-0 Osasuna B | 5 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-10-05 18:00:43October 5, 2019 | Arenas Club 1-2 Bilbao Athletic | 1 - 2 | Segunda B | 2019/2020 | Fadura | Recap |
| 2019-10-12 16:00:36October 12, 2019 | Bilbao Athletic 3-3 Amorebieta | 3 - 3 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-10-19 16:00:26October 19, 2019 | Real Unión 0-1 Bilbao Athletic | 0 - 1 | Segunda B | 2019/2020 | Stadium Gal | Recap |
| 2019-10-26 18:00:33October 26, 2019 | Bilbao Athletic 4-1 Real Valladolid B | 4 - 1 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-11-03 11:00:23November 3, 2019 | Bilbao Athletic 3-1 Logroñés | 3 - 1 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-11-10 12:00:08November 10, 2019 | Burgos 2-0 Bilbao Athletic | 2 - 0 | Segunda B | 2019/2020 | Estadio El Plantío | Recap |
| 2019-11-16 17:00:53November 16, 2019 | Bilbao Athletic 4-1 Unionistas | 4 - 1 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-11-24 17:00:34November 24, 2019 | Guijuelo 2-0 Bilbao Athletic | 2 - 0 | Segunda B | 2019/2020 | Estadio Municipal de Guijuelo | Recap |
| 2019-12-01 18:30:36December 1, 2019 | Bilbao Athletic 3-3 Izarra | 3 - 3 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-12-06 17:30:34December 6, 2019 | Leioa 1-0 Bilbao Athletic | 1 - 0 | Segunda B | 2019/2020 | Sarriena | Recap |
| 2019-12-14 15:30:22December 14, 2019 | Bilbao Athletic 0-1 Barakaldo | 0 - 1 | Segunda B | 2019/2020 | Lezama | Recap |
| 2019-12-21 18:00:33December 21, 2019 | Real Sociedad B 0-2 Bilbao Athletic | 0 - 2 | Segunda B | 2019/2020 | Camp José Luis Orbegoza | Recap |
| 2019-12-29 12:00:45December 29, 2019 | Somorrostro vs Basconia | 12:00:4512:00 pm | Tercera | 2019/2020 | El Malecón | Recap |
| 2020-01-04 16:00:21January 4, 2020 | Bilbao Athletic 1-0 Alavés B | 1 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-01-15 18:00:23January 15, 2020 | Bilbao Athletic 2-3 Haro | 2 - 3 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-01-19 17:00:09January 19, 2020 | Calahorra 2-3 Bilbao Athletic | 2 - 3 | Segunda B | 2019/2020 | La Planilla | Recap |
| 2020-01-26 17:00:35January 26, 2020 | Bilbao Athletic 1-0 Cultural Leonesa | 1 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-02-01 17:00:25February 1, 2020 | Salamanca 1-1 Bilbao Athletic | 1 - 1 | Segunda B | 2019/2020 | Estadio Helmántico | Recap |
| 2020-02-09 12:00:45February 9, 2020 | Bilbao Athletic 1-0 Tudelano | 1 - 0 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-02-15 16:30:39February 15, 2020 | Osasuna B 1-1 Bilbao Athletic | 1 - 1 | Segunda B | 2019/2020 | El Sadar | Recap |
| 2020-02-22 18:30:37February 22, 2020 | Bilbao Athletic 1-1 Arenas Club | 1 - 1 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-02-29 16:30:16February 29, 2020 | Amorebieta 2-1 Bilbao Athletic | 2 - 1 | Segunda B | 2019/2020 | Urritxe | Recap |
| 2020-03-07 16:00:03March 7, 2020 | Bilbao Athletic 3-3 Real Unión | 3 - 3 | Segunda B | 2019/2020 | Lezama | Recap |
| 2020-07-18 20:00:35July 18, 2020 | Bilbao Athletic 1-1* Badajoz | 1 - 1 | Segunda B Playoffs | 2019/2020 | Nuevo Mirador de Algeciras | Recap |