| Campeonato de Tercera Division "A" 2021 | ||||
| Grupo Norte | ||||
| 1° Fecha | ||||
| 21-ago-2021 | Mejillones | Mejillones | 1 | Gaete |
| Salamanca | 0 | |||
| 22-ago-2021 | Freirina | Vallenar | 0 | |
| Provincial Ovalle | 3 | Padilla, Becerra (2) | ||
| 2° Fecha | ||||
| 28-ago-2021 | Ovalle | Provincial Ovalle | 2 | Vasquez, Valdes |
| Quintero Unido | 0 | |||
| 28-ago-2021 | Mejillones | Mejillones | 1 | Sanchez |
| Vallenar | 0 | |||
| 3° Fecha | ||||
| 4-sep-2021 | Freirina | Vallenar | 1 | |
| Salamanca | 2 | |||
| 4-sep-2021 | Quintero | Quintero Unido | 1 | Rojas |
| Mejillones | 0 | |||
| 4° Fecha | ||||
| 11-sep-2021 | Freirina | Vallenar | 0 | |
| Quintero Unido | 0 | |||
| 11-sep-2021 | Salamanca | Salamanca | 2 | Albornoz, Hernandez |
| Provincial Ovalle | 2 | Reyes, Arancibia | ||
| 5° Fecha | ||||
| 16-sep-2021 | Ovalle | Provincial Ovalle | 2 | Pinnola (2) |
| Mejillones | 2 | Sanchez, Gaete | ||
| 17-sep-2021 | Quintero | Quintero Unido | 0 | |
| Salamanca | 0 | |||
| 6° Fecha | ||||
| 25-sep-2021 | Salamanca | Salamanca | 3 | Albornoz, Hernandez, Silva |
| Mejillones | 3 | Gaete, Ibacache (2) | ||
| 25-sep-2021 | Ovalle | Provincial Ovalle | 3 | Valdes, Soriano, Arancibia |
| Vallenar | 2 | Collao, Lecaros | ||
| 7° Fecha | ||||
| 2-oct-2021 | Freirina | Vallenar | 1 | Salazar |
| Mejillones | 1 | Gaete | ||
| 2-oct-2021 | Quintero | Quintero Unido | 0 | |
| Ovalle | 2 | Cifuentes, Reyes | ||
| 8° Fecha | ||||
| 8-oct-2021 | Salamanca | Salamanca | 7 | Gonzalez, Cancino (2), Vargas, Albornoz, Hernandez (2) |
| Vallenar | 3 | Quinteros, Ossandon | ||
| 9-oct-2021 | Mejillones | Mejillones | 4 | Valladares, Ibacache, Guzman, Malinarich |
| Quintero Unido | 3 | Vega (2), Arenas | ||
| 9° Fecha | ||||
| 16-oct-2021 | Ovalle | Provincial Ovalle | 4 | Pinnola, Rojas, Cifuentes, Vargas |
| Salamanca | 0 | |||
| 16-oct-2021 | Quintero | Quintero Unido | 1 | WO |
| Vallenar | 0 | |||
| 10° Fecha | ||||
| 22-oct-2021 | Salamanca | Salamanca | 0 | |
| Quintero Unido | 1 | |||
| 23-oct-2021 | Mejillones | Mejillones | 1 | |
| Provincial Ovalle | 0 | |||
| Grupo Centro | ||||
| 1° Fecha | ||||
| 21-ago-2021 | San Joaquin | Real San Joaquin | 0 | |
| Trasandino | 2 | Arancibia, Monsalve | ||
| 21-ago-2021 | Rancagua | Rancagua Sur | 0 | |
| Municipal Santiago | 0 | |||
| 22-ago-2021 | Peņalolen | Escuela Futbol Macul | 2 | Gonzalez, Avila |
| La Pintana Unida | 1 | Poblete | ||
| 2° Fecha | ||||
| 27-ago-2021 | La Pintana | La Pintana Unida | 0 | |
| Trasandino | 1 | Fuentes | ||
| 28-ago-2021 | San Ramon | Municipal Santiago | 0 | |
| Real San Joaquin | 0 | |||
| 29-ago-2021 | Peņalolen | Escuela Futbol Macul | 2 | Alamos, Ortiz |
| Rancagua Sur | 2 | Basualto, Olivares | ||
| 3° Fecha | ||||
| 3-sep-2021 | Los Andes | Trasandino | 1 | Pasmiņo |
| Municipal Santiago | 1 | Romo | ||
| 4-sep-2021 | San Joaquin | Real San Joaquin | 4 | Morales, Ruiz (2), Paredes |
| Escuela Futbol Macul | 1 | Muzzio | ||
| 4-sep-2021 | Rancagua | Rancagua Sur | 1 | |
| La Pintana Unida | 2 | |||
| 4° Fecha | ||||
| 10-sep-2021 | La Pintana | La Pintana Unida | 0 | |
| Municipal Santiago | 1 | Parada | ||
| 11-sep-2021 | Rancagua | Rancagua Sur | 0 | |
| Real San Joaquin | 2 | Ruiz (2) | ||
| 11-sep-2021 | Peņalolen | Escuela Futbol Macul | 0 | |
| Trasandino | 6 | Brito, Pasmiņo (2), Svec (2), Soto | ||
| 5° Fecha | ||||
| 16-sep-2021 | San Ramon | Municipal Santiago | 3 | Perez, Campillay, Fuenzalida |
| Escuela Futbol Macul | 0 | |||
| 16-sep-2021 | San Joaquin | Real San Joaquin | 2 | Ruiz, Orellana |
| La Pintana Unida | 2 | Sanchez (2) | ||
| 17-sep-2021 | San Felipe | Trasandino | 2 | Brito, Monsalve |
| Rancagua Sur | 1 | Lopez | ||
| 6° Fecha | ||||
| 24-sep-2021 | La Pintana | La Pintana Unida | 7 | Paz, San Martin (2), Poblete, Cariman, Sanchez, Aguilera |
| Escuela Futbol Macul | 0 | |||
| 24-sep-2021 | Los Andes | Trasandino | 1 | Monsalve |
| Real San Joaquin | 2 | Ruiz, Rozas | ||
| 25-sep-2021 | San Ramon | Municipal Santiago | 0 | |
| Rancagua Sur | 0 | |||
| 7° Fecha | ||||
| 1-oct-2021 | Los Andes | Trasandino | 0 | |
| La Pintana Unida | 1 | Lopez | ||
| 1-oct-2021 | Rancagua | Rancagua Sur | 4 | Miranda (2), Olivares, Lopez |
| Escuela Futbol Macul | 1 | Cornejo | ||
| 2-oct-2021 | San Joaquin | Real San Joaquin | 1 | Maulen |
| Municipal Santiago | 1 | Fuenzalida | ||
| 8° Fecha | ||||
| 8-oct-2021 | La Pintana | La Pintana Unida | 1 | Sanchez |
| Rancagua Sur | 1 | Lopez | ||
| 9-oct-2021 | San Ramon | Municipal Santiago | 3 | Perez, Campillay, Fuenzalida |
| Trasandino | 1 | Arancibia | ||
| 10-oct-2021 | Peņalolen | Escuela Futbol Macul | 1 | Avila |
| Real San Joaquin | 3 | Carvajal, Paredes, Rozas | ||
| 9° Fecha | ||||
| 15-oct-2021 | Los Andes | Trasandino | 5 | Quezada, Moreno, Arancibia, Romero, Araya |
| Escuela Futbol Macul | 0 | |||
| 16-oct-2021 | San Ramon | Municipal Santiago | 1 | Parada |
| La Pintana Unida | 0 | |||
| 16-oct-2021 | San Joaquin | Real San Joaquin | 3 | Maulen, Paredes, Ruiz |
| Rancagua Sur | 1 | Miranda | ||
| 10° Fecha | ||||
| 23-oct-2021 | Lo Blanco | La Pintana Unida | 0 | |
| Real San Joaquin | 3 | Ruiz (2), Paredes | ||
| 23-oct-2021 | Rancagua | Rancagua Sur | 3 | Lopez (2), Jerez |
| Trasandino | 2 | Arancibia (2) | ||
| 24-oct-2021 | Peņalolen | Escuela Futbol Macul | 1 | |
| Municipal Santiago | 4 | |||
| Grupo Sur | ||||
| 1° Fecha | ||||
| 22-ago-2021 | Villarrica | Pilmahue | 0 | |
| Osorno | 0 | |||
| 22-ago-2021 | Coronel | Lota Schwager | 2 | Williams, Toloza |
| Rengo | 1 | Carvallo | ||
| 22-ago-2021 | Centenario | Provincial Ranco | 1 | Duarte |
| Linares | 0 | |||
| 2° Fecha | ||||
| 28-ago-2021 | Rosario | Rengo | 2 | Perez, Morales |
| Pilmahue | 1 | Illanes | ||
| 28-ago-2021 | Linares | Linares | 0 | |
| Osorno | 2 | Meneses, Canales | ||
| 29-ago-2021 | Centenario | Provincial Ranco | 2 | Parra, Duarte |
| Lota Schwager | 0 | |||
| 3° Fecha | ||||
| 3-sep-2021 | Coronel | Lota Schwager | 1 | Molina |
| Linares | 0 | |||
| 5-sep-2021 | Villarrica | Pilmahue | 0 | |
| Provincial Ranco | 0 | |||
| 5-sep-2021 | Osorno | Osorno | 2 | Meneses, Canales |
| Rengo | 1 | Lagos | ||
| 4° Fecha | ||||
| 12-sep-2021 | Coronel | Lota Schwager | 0 | |
| Pilmahue | 0 | |||
| 12-sep-2021 | La Union | Provincial Ranco | 1 | Duarte |
| Osorno | 0 | |||
| 12-sep-2021 | Linares | Linares | 0 | |
| Rengo | 1 | Zuņiga | ||
| 5° Fecha | ||||
| 17-sep-2021 | Osorno | Osorno | 0 | |
| Lota Schwager | 1 | Williams | ||
| 17-sep-2021 | Rosario | Rengo | 3 | Nuņez, Perales, Zuņiga |
| Provincial Ranco | 0 | |||
| 17-sep-2021 | Villarrica | Pilmahue | 1 | Canales |
| Linares | 1 | Farias | ||
| 6° Fecha | ||||
| 25-sep-2021 | Rosario | Rengo | 2 | Perales, Palma |
| Lota Schwager | 1 | Desfadur | ||
| 25-sep-2021 | Linares | Linares | 2 | Iturra, Ortega |
| Provincial Ranco | 0 | |||
| 26-sep-2021 | Osorno | Osorno | 1 | Pavlov |
| Pilmahue | 1 | Chandia | ||
| 7° Fecha | ||||
| 3-oct-2021 | Villarrica | Pilmahue | 0 | |
| Rengo | 1 | Nuņez | ||
| 3-oct-2021 | Osorno | Osorno | 2 | Roldan, Soto |
| Linares | 1 | Fariņa | ||
| 3-oct-2021 | Coronel | Lota Schwager | 3 | Toro (2), Desfadur |
| Provincial Ranco | 2 | Cifuentes, Contreras | ||
| 8° Fecha | ||||
| 9-oct-2021 | Rosario | Rengo | 3 | Lagos, Perez (2) |
| Osorno | 0 | |||
| 10-oct-2021 | Linares | Linares | 1 | Iturra |
| Lota Schwager | 2 | Urzua (2) | ||
| 10-oct-2021 | La Union | Provincial Ranco | 3 | Robles, Benavides (2) |
| Pilmahue | 2 | Villagran, Chandia | ||
| 9° Fecha | ||||
| 16-oct-2021 | Osorno | Osorno | 4 | Meneses (P), Soto, Sotomayor, Bizama |
| Provincial Ranco | 3 | Contreras, Parra, Benavides (P) | ||
| 16-oct-2021 | Rosario | Rengo | 0 | |
| Linares | 0 | |||
| 17-oct-2021 | Villarrica | Pilmahue | 0 | |
| Lota Schwager | 1 | Lagos | ||
| 10° Fecha | ||||
| 23-oct-2021 | La Union | Provincial Ranco | 1 | Silva (P) |
| Rengo | 3 | Lagos (2), Perez | ||
| 23-oct-2021 | Coronel | Lota Schwager | 0 | |
| Osorno | 3 | Vera, Inostroza, Avila | ||
| 23-oct-2021 | Linares | Linares | 1 | Torres |
| Pilmahue | 0 | |||
| Cuartos de Final | ||||
| 5-nov-2021 | Los Andes | Trasandino | 0 | |
| Provincial Ovalle | 0 | |||
| 13-nov-2021 | Ovalle | Provincial Ovalle | 1(2) | Cifuentes |
| Trasandino | 1(4) | Arancibia | ||
| 6-nov-2021 | San Ramon | Municipal Santiago | 3 | Perez (P), Romo, Gonzalez |
| Real San Joaquin | 2 | Ruiz (2) | ||
| 13-nov-2021 | San Joaquin | Real San Joaquin | 3 | Ruiz (P), Rozas, Carvajal |
| Municipal Santiago | 0 | |||
| 7-nov-2021 | La Union | Provincial Ranco | 3 | Contreras (2), Miranda |
| Rengo | 1 | Rojas | ||
| 13-nov-2021 | Rosario | Rengo | 3 | Rojas, Recabal (2) |
| Provincial Ranco | 3 | Silva, Robles, Benavides | ||
| 7-nov-2021 | Coronel | Lota Schwager | 0 | |
| Mejillones | 0 | |||
| 13-nov-2021 | Mejillones | Mejillones | 2 | Gaete (2) |
| Lota Schwager | 1 | Desfadur | ||
| Fase Final | ||||
| 27-nov-2021 | Los Andes | Trasandino | 2 | Nuņez, Sotomayor |
| Provincial Ranco | 1 | Benavides | ||
| 4-dic-2021 | San Joaquin | Real San Joaquin | 1 | Ruiz |
| Trasandino | 2 | Pasmiņo, Svec | ||
| 12-dic-2021 | La Union | Provincial Ranco | 2 | Benavides (2, 1P) |
| Real San Joaquin | 1 | Montenegro | ||
| 18-dic-2021 | La Union | Provincial Ranco | 0 | |
| Trasandino | 1 | Svec | ||
| 23-dic-2021 | Los Andes | Trasandino | 2 | Svec (2) |
| Real San Joaquin | 0 | |||
| 30-dic-2021 | San Joaquin | Real San Joaquin | 4 | Paredes, Ruiz, Carvajal, Cordova |
| Provincial Ranco | 1 | Benavides | ||