| 2019-07-20 12:00:51July 20, 2019 | Arenas Club 1-6 Athletic Club | 1 - 6 | Friendly | 2019/2020 | Fadura |
| 2019-07-27 17:00:47July 27, 2019 | Paderborn 3-3 Athletic Club | 3 - 3 | Friendly | 2019/2020 | Energieversum Stadion |
| 2019-07-28 16:00:22July 28, 2019 | Borussia Monchengladbach 0-2 Athletic Club | 0 - 2 | Friendly | 2019/2020 | Christopeit Sports Arena |
| 2019-08-01 20:30:47August 1, 2019 | Numancia 1-1 Athletic Club | 1 - 1 | Friendly | 2019/2020 | Los Pajaritos |
| 2019-08-03 16:00:18August 3, 2019 | West Ham 2-2 Athletic Club* | 2 - 2 | Friendly | 2019/2020 | London Stadium |
| 2019-08-04 20:00:03August 4, 2019 | Racing 2-1 Athletic Club | 2 - 1 | Friendly | 2019/2020 | El Sardinero |
| 2019-08-07 20:00:33August 7, 2019 | Roma 2-2 Athletic Club | 2 - 2 | Friendly | 2019/2020 | Stadio Renato Curi |
| 2019-08-08 20:00:08August 8, 2019 | Mirandés 1-2 Athletic Club | 1 - 2 | Friendly | 2019/2020 | Anduva |
| 2019-08-16 21:00:16August 16, 2019 | Athletic Club 1-0 Barcelona | 1 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-08-24 21:00:42August 24, 2019 | Getafe 1-1 Athletic Club | 1 - 1 | La Liga | 2019/2020 | Coliseum Alfonso Pérez |
| 2019-08-30 22:00:36August 30, 2019 | Athletic Club 2-0 Real Sociedad | 2 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-09-05 19:00:59September 5, 2019 | Toulouse 1-2 Athletic | 1 - 2 | Friendly | 2019/2020 | Estadio de Stade Didier Deschamps |
| 2019-09-13 21:00:08September 13, 2019 | Mallorca 0-0 Athletic Club | 0 - 0 | La Liga | 2019/2020 | Estadio de Son Moix |
| 2019-09-22 18:30:51September 22, 2019 | Athletic Club 2-0 Alavés | 2 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-09-25 19:00:39September 25, 2019 | Leganés 1-1 Athletic Club | 1 - 1 | La Liga | 2019/2020 | Butarque |
| 2019-09-28 13:00:57September 28, 2019 | Athletic Club 0-1 Valencia | 0 - 1 | La Liga | 2019/2020 | San Mamés |
| 2019-10-06 14:00:47October 6, 2019 | Celta Vigo 1-0 Athletic Club | 1 - 0 | La Liga | 2019/2020 | Balaídos |
| 2019-10-10 20:00:02October 10, 2019 | Alavés 0-1 Athletic Club | 0 - 1 | Friendly | 2019/2020 | Lasesarre |
| 2019-10-10 21:00:57October 10, 2019 | Barakaldo 0-0 Athletic Club | 0 - 0 | Friendly | 2019/2020 | Lasesarre |
| 2019-10-20 18:30:33October 20, 2019 | Athletic Club 1-1 Real Valladolid | 1 - 1 | La Liga | 2019/2020 | San Mamés |
| 2019-10-26 21:00:18October 26, 2019 | Atlético Madrid 2-0 Athletic Club | 2 - 0 | La Liga | 2019/2020 | Wanda Metropolitano |
| 2019-10-30 20:00:00October 30, 2019 | Athletic Club 3-0 Espanyol | 3 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-11-03 14:00:48November 3, 2019 | Villarreal 0-0 Athletic Club | 0 - 0 | La Liga | 2019/2020 | Estadio de la Cerámica |
| 2019-11-10 14:00:39November 10, 2019 | Athletic Club 2-1 Levante | 2 - 1 | La Liga | 2019/2020 | San Mamés |
| 2019-11-15 11:00:00November 15, 2019 | Athletic Club 4-1 Eibar | 4 - 1 | Friendly | 2019/2020 | Lezama |
| 2019-11-24 14:00:27November 24, 2019 | Osasuna 1-2 Athletic Club | 1 - 2 | La Liga | 2019/2020 | El Sadar |
| 2019-12-01 14:00:11December 1, 2019 | Athletic Club 2-0 Granada | 2 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-12-08 14:00:49December 8, 2019 | Real Betis 3-2 Athletic Club | 3 - 2 | La Liga | 2019/2020 | Benito Villamarín |
| 2019-12-14 18:30:43December 14, 2019 | Athletic Club 0-0 Eibar | 0 - 0 | La Liga | 2019/2020 | San Mamés |
| 2019-12-17 21:00:00December 17, 2019 | Intercity 0-3 Athletic Club | 0 - 3 | Copa del Rey | 2019/2020 | Poliesportiu de Sant Joan |
| 2019-12-22 21:00:21December 22, 2019 | Real Madrid 0-0 Athletic Club | 0 - 0 | La Liga | 2019/2020 | Santiago Bernabeu |
| 2020-01-03 21:00:03January 3, 2020 | Sevilla 1-1 Athletic Club | 1 - 1 | La Liga | 2019/2020 | Ramón Sánchez Pizjuán |
| 2020-01-11 19:00:58January 11, 2020 | Sestao River 0-4 Athletic Club | 0 - 4 | Copa del Rey | 2019/2020 | Las Llanas |
| 2020-01-19 18:30:48January 19, 2020 | Athletic Club 1-1 Celta Vigo | 1 - 1 | La Liga | 2019/2020 | San Mamés |
| 2020-01-22 19:00:11January 22, 2020 | Elche 1-1* Athletic Club | 1 - 1 | Copa del Rey | 2019/2020 | Estadio Martínez Valero |
| 2020-01-25 13:00:30January 25, 2020 | Espanyol 1-1 Athletic Club | 1 - 1 | La Liga | 2019/2020 | RCDE Stadium |
| 2020-01-28 21:00:41January 28, 2020 | Tenerife 3-3* Athletic Club | 3 - 3 | Copa del Rey | 2019/2020 | Estadio Heliodoro Rodríguez López |
| 2020-02-02 16:00:16February 2, 2020 | Athletic Club 0-2 Getafe | 0 - 2 | La Liga | 2019/2020 | San Mamés |
| 2020-02-06 21:00:43February 6, 2020 | Athletic Club 1-0 Barcelona | 1 - 0 | Copa del Rey | 2019/2020 | |
| 2020-02-09 14:00:53February 9, 2020 | Real Sociedad 2-1 Athletic Club | 2 - 1 | La Liga | 2019/2020 | Anoeta |
| 2020-02-12 21:00:07February 12, 2020 | Athletic Club 1-0 Granada | 1 - 0 | Copa del Rey | 2019/2020 | |
| 2020-02-16 18:30:39February 16, 2020 | Athletic Club 0-1 Osasuna | 0 - 1 | La Liga | 2019/2020 | San Mamés |
| 2020-02-23 14:00:16February 23, 2020 | Alavés 2-1 Athletic Club | 2 - 1 | La Liga | 2019/2020 | Mendizorrotza |
| 2020-03-01 14:00:42March 1, 2020 | Athletic Club 1-0 Villarreal | 1 - 0 | La Liga | 2019/2020 | San Mamés |
| 2020-03-05 21:00:39March 5, 2020 | Granada 2-1* Athletic Club | 2 - 1 | Copa del Rey | 2019/2020 | Estadio de Los Cármenes |
| 2020-03-08 14:00:49March 8, 2020 | Real Valladolid 1-4 Athletic Club | 1 - 4 | La Liga | 2019/2020 | Estadio José Zorrilla |
| 2020-06-14 14:00:32June 14, 2020 | Athletic Club 1-1 Atlético Madrid | 1 - 1 | La Liga | 2019/2020 | San Mamés |
| 2020-06-17 19:30:28June 17, 2020 | Eibar 2-2 Athletic Club | 2 - 2 | La Liga | 2019/2020 | Ipurua |
| 2020-06-20 17:00:16June 20, 2020 | Athletic Club 1-0 Real Betis | 1 - 0 | La Liga | 2019/2020 | San Mamés |
| 2020-06-23 22:00:05June 23, 2020 | Barcelona 1-0 Athletic Club | 1 - 0 | La Liga | 2019/2020 | Camp Nou |
| 2020-06-27 14:00:54June 27, 2020 | Athletic Club 3-1 Mallorca | 3 - 1 | La Liga | 2019/2020 | San Mamés |
| 2020-07-01 19:30:40July 1, 2020 | Valencia 0-2 Athletic Club | 0 - 2 | La Liga | 2019/2020 | Mestalla |
| 2020-07-05 14:00:18July 5, 2020 | Athletic Club 0-1 Real Madrid | 0 - 1 | La Liga | 2019/2020 | San Mamés |
| 2020-07-09 22:00:58July 9, 2020 | Athletic Club 1-2 Sevilla | 1 - 2 | La Liga | 2019/2020 | San Mamés |
| 2020-07-12 17:00:32July 12, 2020 | Levante 1-2 Athletic Club | 1 - 2 | La Liga | 2019/2020 | Cuitat de Valéncia |
| 2020-07-15 21:00:25July 15, 2020 | Athletic Club 0-2 Leganés | 0 - 2 | La Liga | 2019/2020 | San Mamés |
| 2020-07-19 21:00:23July 19, 2020 | Granada 4-0 Athletic Club | 4 - 0 | La Liga | 2019/2020 | Estadio de Los Cármenes |