# 2021–22 Tercera División RFEF

The 2021–22 Tercera División RFEF season was the first for the national fifth level in the Spanish football league system. The league has 18 groups like the former fourth tier Tercera División.

## Competition format

* The group champions were promoted to 2022–23 Segunda División RFEF.
* The next four eligible teams in each group played in the promotion play-offs.
* The champion of each group qualified for 2022–23 Copa del Rey. If the champion was a reserve team, the first non-reserve team qualified would join the Copa.
* In each group, at least three teams were relegated to regional divisions; the relegation of each group was configured so that all Tercera División RFEF groups would have 16 teams for the 2022–23 season.

## Overview before the season

A total of 320 teams made up the league: 26 relegated from the 2020–21 Segunda División B, 234 retained from the 2020–21 Tercera División, and 60 promoted from the regional divisions.

## Groups
### Group 1 – Galicia
#### Teams retained from 2020–21 Tercera División

* Alondras
* Arzúa
* Barco
* Choco
* Estradense
* Deportivo Fabril
* Ourense CF
* Polvorín
* Racing Vilalbés
* Rápido Bouzas
* Silva
* Somozas
* Viveiro

#### Teams promoted from 2020 to 2021 Preferente de Galicia

* Atlético Arnoia
* Juvenil Ponteareas
* Noia
* Sofán

#### Teams and locations

| Team | City | Home ground |
| Alondras | Cangas | O Morrazo |
| Arzúa | Arzúa | Do Viso |
| Atlético Arnoia | A Arnoia | Municipal de Barreiro |
| Barco | O Barco de Valdeorras | Calabagueiros |
| Choco | Redondela | Santa Mariña |
| Deportivo Fabril | Abegondo | Abegondo |
| Estradense | A Estrada | Municipal |
| Juvenil Ponteareas | Ponteareas | Municipal de Pardellas |
| Noia | Noia | San Lázaro |
| Ourense | Ourense | O Couto |
| Polvorín | Lugo | O Polvorín |
| Racing Villalbés | Vilalba | A Magdalena |
| Rápido de Bouzas | Vigo | Baltasar Pujales |
| Silva | A Coruña | A Grela |
| Sofán | Carballo | O Carral |
| Somozas | As Somozas | Pardiñas |
| Viveiro | Viveiro | Cantarrana |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Polvorín (C, P) | 32 | 20 | 8 | 4 | 54 | 23 | +31 | 68 | Promotion to Segunda División RFEF |
| 2 | Ourense CF (O, P) | 32 | 19 | 10 | 3 | 48 | 21 | +27 | 67 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Somozas | 32 | 19 | 6 | 7 | 43 | 30 | +13 | 63 | Qualification for the promotion play-offs |
| 4 | Barco | 32 | 15 | 9 | 8 | 50 | 37 | +13 | 54 | Qualification for the promotion play-offs |
| 5 | Deportivo Fabril | 32 | 15 | 8 | 9 | 49 | 23 | +26 | 53 | Qualification for the promotion play-offs |
| 6 | Rápido Bouzas | 32 | 12 | 15 | 5 | 39 | 26 | +13 | 51 | |
| 7 | Racing Villalbés | 32 | 12 | 14 | 6 | 43 | 24 | +19 | 50 | |
| 8 | Estradense | 32 | 12 | 8 | 12 | 36 | 40 | −4 | 44 | |
| 9 | Alondras | 32 | 9 | 13 | 10 | 30 | 29 | +1 | 40 | |
| 10 | Silva | 32 | 11 | 6 | 15 | 34 | 41 | −7 | 39 | |
| 11 | Arzúa | 32 | 8 | 14 | 10 | 29 | 35 | −6 | 38 | |
| 12 | Viveiro | 32 | 8 | 12 | 12 | 32 | 42 | −10 | 36 | |
| 13 | Choco | 32 | 8 | 11 | 13 | 31 | 42 | −11 | 35 | |
| 14 | Noia (R) | 32 | 7 | 8 | 17 | 30 | 49 | −19 | 29 | Relegation to Preferente de Galicia |
| 15 | Juvenil Ponteareas (R) | 32 | 7 | 7 | 18 | 25 | 43 | −18 | 28 | Relegation to Preferente de Galicia |
| 16 | Atlético Arnoia (R) | 32 | 4 | 10 | 18 | 25 | 54 | −29 | 22 | Relegation to Preferente de Galicia |
| 17 | Sofán (R) | 32 | 4 | 5 | 23 | 29 | 68 | −39 | 17 | Relegation to Preferente de Galicia |

### Group 2 – Asturias
#### Teams retained from 2020–21 Tercera División

* Caudal
* Colunga
* Gijón Industrial
* L'Entregu
* Lenense
* Llanes
* Mosconia
* Navarro
* Praviano
* Real Titánico
* San Martín
* Tuilla
* Urraca

#### Teams relegated from 2020–21 Segunda División B

* Covadonga
* Lealtad
* Oviedo Vetusta
* Sporting Gijón B

#### Teams promoted from 2020 to 2021 Regional Preferente

* Langreo B
* Luarca
* Roces

#### Teams and locations

| Team | City | Home ground |
| Caudal | Mieres | Hermanos Antuña |
| Colunga | Colunga | Santianes |
| Covadonga | Oviedo | Juan Antonio Álvarez Rabanal |
| Gijón Industrial | Gijón | Santa Cruz |
| L'Entregu | El Entrego, San Martín del Rey Aurelio | Nuevo Nalón |
| Langreo B | Langreo | Ganzábal |
| Lealtad | Villaviciosa | Les Caleyes |
| Lenense | Pola de Lena, Lena | El Sotón |
| Llanes | Llanes | San José |
| Luarca | Luarca | La Veigona |
| Mosconia | Grado | Marqués de la Vega de Anzo |
| Navarro | Valliniello, Avilés | Tabiella |
| Oviedo Vetusta | Oviedo | El Requexón |
| Praviano | Pravia | Santa Catalina |
| Roces | Gijón | Covadonga |
| San Martín | Sotrondio, San Martín del Rey Aurelio | El Florán |
| Sporting Gijón B | Gijón | Pepe Ortiz |
| Titánico | Laviana | Las Tolvas |
| Tuilla | Tuilla, Langreo | El Candín |
| Urraca | Posada, Llanes | La Corredoria |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Oviedo Vetusta (C, P) | 38 | 23 | 6 | 9 | 75 | 39 | +36 | 75 | Promotion to Segunda División RFEF |
| 2 | Sporting Gijón B | 38 | 21 | 11 | 6 | 71 | 25 | +46 | 74 | Qualification for the promotion play-offs |
| 3 | Lealtad (O) | 38 | 20 | 11 | 7 | 55 | 27 | +28 | 71 | Qualification for the promotion play-offs and Copa del Rey |
| 4 | Llanes | 38 | 18 | 10 | 10 | 50 | 36 | +14 | 64 | Qualification for the promotion play-offs |
| 5 | Caudal | 38 | 17 | 13 | 8 | 55 | 37 | +18 | 64 | Qualification for the promotion play-offs |
| 6 | Colunga | 38 | 15 | 16 | 7 | 51 | 32 | +19 | 61 | |
| 7 | L'Entregu | 38 | 15 | 12 | 11 | 48 | 39 | +9 | 57 | |
| 8 | Praviano | 38 | 14 | 14 | 10 | 51 | 44 | +7 | 56 | |
| 9 | Tuilla | 38 | 14 | 11 | 13 | 50 | 55 | −5 | 53 | |
| 10 | Covadonga | 38 | 13 | 12 | 13 | 48 | 44 | +4 | 51 | |
| 11 | Luarca | 38 | 13 | 10 | 15 | 36 | 52 | −16 | 49 | |
| 12 | Real Titánico | 38 | 12 | 12 | 14 | 46 | 48 | −2 | 48 | |
| 13 | Gijón Industrial (R) | 38 | 12 | 11 | 15 | 43 | 52 | −9 | 47 | Relegation to Regional Preferente |
| 14 | Urraca (R) | 38 | 11 | 14 | 13 | 31 | 35 | −4 | 47 | Relegation to Regional Preferente |
| 15 | San Martín (R) | 38 | 12 | 11 | 15 | 44 | 48 | −4 | 47 | Relegation to Regional Preferente |
| 16 | Lenense (R) | 38 | 12 | 10 | 16 | 39 | 48 | −9 | 46 | Relegation to Regional Preferente |
| 17 | Roces (R) | 38 | 8 | 12 | 18 | 40 | 62 | −22 | 36 | Relegation to Regional Preferente |
| 18 | Navarro (R) | 38 | 6 | 15 | 17 | 29 | 55 | −26 | 33 | Relegation to Regional Preferente |
| 19 | Langreo B (R) | 38 | 7 | 5 | 26 | 36 | 80 | −44 | 26 | Relegation to Regional Preferente |
| 20 | Mosconia (R) | 38 | 6 | 6 | 26 | 30 | 70 | −40 | 24 | Relegation to Regional Preferente |
* 1 2 Llanes finished ahead of Caudal on head-to-head points: Caudal–Llanes 1–1, Llanes–Caudal 3–2
* ↑ Gijón Industrial awarded a 0–3 win in their Round 31 match against L'Entregu after the latter fielded an ineligible player. The match originally ended 4–2
* 1 2 Relegated due to relegations of regional teams from Segunda División RFEF
* 1 2 3 Gijón Industrial and Urraca finished ahead of San Martín on head-to-head points: Gijón Industrial 7 pts, Urraca 7 pts, San Martín 3 pts. Gijón Industrial finished ahead of Urraca on head-to-head points: Urraca–Gijón Industrial 1–1, Gijón Industrial–Urraca 2–0

### Group 3 – Cantabria
#### Teams retained from 2020–21 Tercera División

* Atlético Albericia
* Barreda
* Cartes
* Castro
* Escobedo
* Gimnástica Torrelavega
* Guarnizo
* Sámano
* Selaya
* Siete Villas
* Textil Escudo
* Torina
* Vimenor

#### Teams promoted from 2020 to 2021 Regional Preferente

* Colindres
* Naval
* Noja

#### Teams and locations

| Team | City | Home ground |
| Atlético Albericia | Santander | Juan Hormaechea |
| Barreda | Barreda, Torrelavega | Solvay |
| Cartes | Cartes | El Ansar |
| Castro | Castro Urdiales | Mioño |
| Colindres | Colindres | El Carmen |
| Escobedo | Escobedo, Camargo | Eusebio Arce |
| Gimnástica Torrelavega | Torrelavega | El Malecón |
| Guarnizo | Guarnizo, El Astillero | El Pilar |
| Naval | Reinosa | San Francisco |
| Noja | Noja | La Caseta |
| Sámano | Sámano, Castro Urdiales | Vallegón |
| Selaya | Selaya | El Castañal |
| Siete Villas | Castillo, Arnuero | San Pedro |
| Textil Escudo | Cabezón de la Sal | Municipal |
| Torina | Bárcena de Pie de Concha | Municipal |
| Vimenor | Vioño de Piélagos, Piélagos | La Vidriera |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Gimnástica Torrelavega (C, P) | 30 | 19 | 8 | 3 | 69 | 17 | +52 | 65 | Promotion to Segunda División RFEF and qualification for Copa del Rey |
| 2 | Vimenor | 30 | 16 | 9 | 5 | 49 | 27 | +22 | 57 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Escobedo (O) | 30 | 16 | 6 | 8 | 53 | 27 | +26 | 54 | Qualification for the promotion play-offs |
| 4 | Naval | 30 | 13 | 9 | 8 | 41 | 26 | +15 | 48 | Qualification for the promotion play-offs |
| 5 | Torina | 30 | 12 | 10 | 8 | 34 | 25 | +9 | 46 | Qualification for the promotion play-offs |
| 6 | Sámano | 30 | 13 | 7 | 10 | 35 | 33 | +2 | 46 | |
| 7 | Atlético Albericia | 30 | 11 | 11 | 8 | 38 | 35 | +3 | 44 | |
| 8 | Guarnizo | 30 | 9 | 15 | 6 | 36 | 30 | +6 | 42 | |
| 9 | Siete Villas | 30 | 11 | 8 | 11 | 41 | 41 | 0 | 41 | |
| 10 | Cartes | 30 | 8 | 13 | 9 | 31 | 37 | −6 | 37 | |
| 11 | Castro | 30 | 8 | 13 | 9 | 34 | 43 | −9 | 37 | |
| 12 | Textil Escudo | 30 | 7 | 11 | 12 | 24 | 38 | −14 | 32 | |
| 13 | Noja | 30 | 6 | 9 | 15 | 32 | 57 | −25 | 27 | |
| 14 | Barreda | 30 | 5 | 10 | 15 | 26 | 47 | −21 | 25 | |
| 15 | Colindres (R) | 30 | 5 | 6 | 19 | 26 | 58 | −32 | 21 | Relegation to Regional Preferente |
| 16 | Selaya (R) | 30 | 2 | 13 | 15 | 20 | 48 | −28 | 19 | Relegation to Regional Preferente |
* 1 2 Torina finished ahead of Sámano on head-to-head points: Torina–Sámano 0–0, Sámano–Torina 0–1
* 1 2 Cartes finished ahead of Castro on head-to-head points: Cartes–Castro 2–0, Castro–Cartes 3–3

### Group 4 – Basque Country
#### Teams retained from 2020–21 Tercera División

* Anaitasuna
* Aurrerá Ondarroa
* Basconia
* Beasain
* Cultural Durango
* Deusto
* Lagun Onak
* Pasaia
* San Ignacio
* Santutxu
* Tolosa
* Urduliz
* Vitoria

#### Teams relegated from 2020–21 Segunda División B

* Alavés B
* Barakaldo
* Leioa
* Portugalete

#### Teams promoted from 2020 to 2021 División de Honor

* Amurrio
* Beti Gazte
* Uritarra

#### Teams and locations

| Team | City | Home ground |
| Alavés B | Vitoria-Gasteiz | Ibaia |
| Amurrio | Amurrio | Basarte |
| Anaitasuna | Azkoitia | Txerloia |
| Aurrerá Ondarroa | Ondarroa | Zaldupe |
| Barakaldo | Barakaldo | Lasesarre |
| Basconia | Basauri | López Cortázar |
| Beasain | Beasain | Loinaz |
| Beti Gazte | Lesaca (Navarre) | Mastegi |
| Cultural Durango | Durango | Tabira |
| Deusto | Bilbao | Etxezuri |
| Lagun Onak | Azpeitia | Garmendipe |
| Leioa | Leioa | Sarriena |
| Pasaia | Pasaia | Don Bosco |
| Portugalete | Portugalete | La Florida |
| San Ignacio | Vitoria-Gasteiz | Adurtzabal |
| Santutxu | Bilbao | Maiona |
| Tolosa | Tolosa | Berazubi |
| Urduliz | Urduliz | Iparralde |
| Uritarra | Larrabezúa | Errebale |
| Vitoria | Laudio | Ellakuri |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Alavés B (C, P) | 38 | 21 | 13 | 4 | 72 | 31 | +41 | 76 | Promotion to Segunda División RFEF |
| 2 | Beasain (O, P) | 38 | 19 | 13 | 6 | 65 | 36 | +29 | 70 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Portugalete | 38 | 19 | 13 | 6 | 60 | 33 | +27 | 70 | Qualification for the promotion play-offs |
| 4 | Barakaldo | 38 | 20 | 9 | 9 | 64 | 46 | +18 | 69 | Qualification for the promotion play-offs |
| 5 | Basconia | 38 | 18 | 11 | 9 | 45 | 32 | +13 | 65 | Qualification for the promotion play-offs |
| 6 | Vitoria | 38 | 16 | 11 | 11 | 55 | 49 | +6 | 59 | |
| 7 | San Ignacio | 38 | 17 | 7 | 14 | 57 | 48 | +9 | 58 | |
| 8 | Cultural Durango | 38 | 13 | 18 | 7 | 42 | 29 | +13 | 57 | |
| 9 | Leioa | 38 | 15 | 11 | 12 | 55 | 38 | +17 | 56 | |
| 10 | Anaitasuna | 38 | 14 | 10 | 14 | 48 | 49 | −1 | 52 | |
| 11 | Lagun Onak | 38 | 13 | 12 | 13 | 42 | 44 | −2 | 51 | |
| 12 | Pasaia | 38 | 13 | 11 | 14 | 36 | 43 | −7 | 50 | |
| 13 | Deusto | 38 | 11 | 16 | 11 | 42 | 40 | +2 | 49 | |
| 14 | Urduliz | 38 | 12 | 9 | 17 | 39 | 57 | −18 | 45 | |
| 15 | Aurrerá Ondarroa | 38 | 10 | 8 | 20 | 36 | 55 | −19 | 38 | |
| 16 | Santutxu (R) | 38 | 8 | 14 | 16 | 42 | 60 | −18 | 38 | Relegation to División de Honor |
| 17 | Uritarra (R) | 38 | 10 | 8 | 20 | 38 | 52 | −14 | 38 | Relegation to División de Honor |
| 18 | Amurrio (R) | 38 | 8 | 13 | 17 | 39 | 45 | −6 | 37 | Relegation to División de Honor |
| 19 | Beti Gazte (R) | 38 | 6 | 8 | 24 | 34 | 80 | −46 | 26 | Relegation to División de Honor |
| 20 | Tolosa (R) | 38 | 7 | 5 | 26 | 43 | 87 | −44 | 26 | Relegation to División de Honor |
* 1 2 Beasain finished ahead of Portugalete on head-to-head points: Beasain–Portugalete 2–1, Portugalete–Beasain 0–2
* 1 2 3 Aurrerá Ondarroa finished ahead of Santutxu and Uritarra on head-to-head points: Aurrerá Ondarroa 9 pts, Santutxu 7 pts, Uritarra 1 pt
* 1 2 Beti Gazte finished ahead of Tolosa on head-to-head points: Tolosa–Beti Gazte 1–4, Beti Gazte–Tolosa 2–2

### Group 5 – Catalonia
#### Teams retained from 2020–21 Tercera División

* Castelldefels
* Figueres
* Girona B
* Grama
* Granollers
* Manresa
* Pobla Mafumet
* Peralada
* San Cristóbal
* Sant Andreu
* Sants
* Vilafranca
* Vilassar de Mar

#### Teams relegated from 2020–21 Segunda División B

* L'Hospitalet
* Olot

#### Teams promoted from 2020 to 2021 Primera Catalana

* Ascó
* Guineueta

#### Teams and locations

| Team | City | Home ground |
| Ascó | Ascó | Municipal d'Ascó |
| Castelldefels | Castelldefels | Els Canyars |
| Figueres | Figueres | Camp de Vilatenim |
| Girona B | Girona | Torres de Palau |
| Grama | Santa Coloma de Gramenet | Can Peixauet |
| Granollers | Granollers | Municipal de Granollers |
| Guineueta | Barcelona | CEM de la Guineueta |
| L'Hospitalet | L'Hospitalet de Llobregat | Municipal de l'Hospitalet de Llobregat |
| Manresa | Manresa | Zem del Congost |
| Olot | Olot | Pla de Baix |
| Peralada | Peralada | Municipal de Peralada |
| Pobla de Mafumet | La Pobla de Mafumet | Municipal de la Pobla de Mafumet |
| San Cristóbal | Terrassa | Ca n'Anglada |
| Sant Andreu | Barcelona | Narcís Sala |
| Sants | Barcelona | L'Energia |
| Vilafranca | Vilafranca del Penedès | ZEM de Vilafranca del Penedès |
| Vilassar de Mar | Vilassar de Mar | Xevi Ramón |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Manresa (C, P) | 32 | 17 | 13 | 2 | 43 | 21 | +22 | 64 | Promotion to Segunda División RFEF and qualification for Copa del Rey |
| 2 | Olot (O, P) | 32 | 18 | 7 | 7 | 53 | 32 | +21 | 61 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | San Cristóbal | 32 | 16 | 11 | 5 | 43 | 25 | +18 | 59 | Qualification for the promotion play-offs |
| 4 | Girona B | 32 | 17 | 7 | 8 | 38 | 25 | +13 | 58 | Qualification for the promotion play-offs |
| 5 | Sant Andreu | 32 | 16 | 5 | 11 | 47 | 33 | +14 | 53 | Qualification for the promotion play-offs |
| 6 | L'Hospitalet | 32 | 14 | 7 | 11 | 43 | 37 | +6 | 49 | |
| 7 | Pobla de Mafumet | 32 | 12 | 8 | 12 | 35 | 26 | +9 | 44 | |
| 8 | Vilassar de Mar | 32 | 11 | 11 | 10 | 29 | 24 | +5 | 44 | |
| 9 | Grama | 32 | 12 | 7 | 13 | 35 | 31 | +4 | 43 | |
| 10 | Peralada | 32 | 10 | 12 | 10 | 39 | 31 | +8 | 42 | |
| 11 | Vilafranca | 32 | 10 | 11 | 11 | 25 | 33 | −8 | 41 | |
| 12 | Castelldefels | 32 | 11 | 7 | 14 | 33 | 39 | −6 | 40 | |
| 13 | Sants | 32 | 9 | 7 | 16 | 32 | 41 | −9 | 34 | |
| 14 | Granollers (R) | 32 | 9 | 7 | 16 | 32 | 48 | −16 | 34 | Relegation to Primera Catalana |
| 15 | Figueres (R) | 32 | 8 | 8 | 16 | 29 | 37 | −8 | 32 | Relegation to Primera Catalana |
| 16 | Ascó (R) | 32 | 6 | 7 | 19 | 23 | 60 | −37 | 25 | Relegation to Primera Catalana |
| 17 | Guineueta (R) | 32 | 4 | 9 | 19 | 23 | 59 | −36 | 21 | Relegation to Primera Catalana |
* 1 2 Pobla de Mafumet finished ahead of Vilassar de Mar on overall goal difference
* 1 2 Sants finished ahead of Granollers on head-to-head goal difference: Sants–Granollers 3–0, Granollers–Sants 1–0

### Group 6 – Valencian Community
#### Teams retained from 2020–21 Tercera División

* Acero
* Atlético Saguntino
* Benigànim
* Elche Ilicitano
* Hércules B
* Jove Español
* Olímpic Xàtiva
* Recambios Colón
* Roda
* Silla
* Torrent
* Villajoyosa
* Villarreal C

#### Teams relegated from 2020–21 Segunda División B

* Atzeneta
* Orihuela
* Valencia Mestalla

#### Teams promoted from 2020 to 2021 Regional Preferente

* Athletic Torrellano
* Callosa Deportiva
* Castellón B

#### Teams and locations

| Team | City | Home ground |
| Acero | Sagunto | El Fornàs |
| Athletic Torrellano | Torrellano, Elche | Municipal |
| Atlético Saguntino | Sagunto | Morvedre |
| Atzeneta | Atzeneta d'Albaida | El Regit |
| Benigànim | Benigànim | Municipal |
| Callosa Deportiva | Callosa de Segura | El Palmeral |
| Castellón B | Castellón | Ciudad Deportiva |
| Elche Ilicitano | Elche | José Díaz Iborra |
| Hércules B | Alicante | Juan Antonio Samaranch |
| Jove Español | San Vicente del Raspeig | Ciudad Deportiva |
| Olímpic | Xàtiva | La Murta |
| Orihuela | Orihuela | Los Arcos |
| Recambios Colón | Catarroja | Sedaví |
| Roda | Villarreal | Pamesa Cerámica |
| Silla | Silla | Vicente Morera |
| Torrent | Torrent | San Gregorio |
| Valencia Mestalla | Valencia | Antonio Puchades |
| Villajoyosa | Villajoyosa | Nou Pla |
| Villarreal C | Villarreal | Pamesa Cerámica |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Valencia Mestalla (C, P) | 36 | 21 | 11 | 4 | 65 | 27 | +38 | 74 | Promotion to Segunda División RFEF |
| 2 | Atlético Saguntino (O, P) | 36 | 17 | 13 | 6 | 46 | 30 | +16 | 64 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Atzeneta | 36 | 18 | 9 | 9 | 46 | 25 | +21 | 63 | Qualification for the promotion play-offs |
| 4 | Acero | 36 | 18 | 8 | 10 | 36 | 27 | +9 | 62 | Qualification for the promotion play-offs |
| 5 | Torrent | 36 | 17 | 9 | 10 | 42 | 32 | +10 | 60 | Qualification for the promotion play-offs |
| 6 | Orihuela | 36 | 16 | 10 | 10 | 50 | 35 | +15 | 58 | |
| 7 | Roda | 36 | 15 | 11 | 10 | 34 | 23 | +11 | 56 | |
| 8 | Elche Ilicitano | 36 | 13 | 15 | 8 | 56 | 29 | +27 | 54 | |
| 9 | Villarreal C | 36 | 14 | 9 | 13 | 52 | 39 | +13 | 51 | |
| 10 | Athletic Torrellano | 36 | 13 | 12 | 11 | 37 | 37 | 0 | 51 | |
| 11 | Hércules B | 36 | 14 | 7 | 15 | 35 | 36 | −1 | 49 | |
| 12 | Silla | 36 | 12 | 11 | 13 | 44 | 46 | −2 | 47 | |
| 13 | Castellón B | 36 | 11 | 13 | 12 | 32 | 34 | −2 | 46 | |
| 14 | Jove Español | 36 | 12 | 9 | 15 | 23 | 31 | −8 | 45 | |
| 15 | Olímpic (R) | 36 | 10 | 10 | 16 | 29 | 44 | −15 | 40 | Relegation to Regional Preferente |
| 16 | Callosa Deportiva (R) | 36 | 9 | 10 | 17 | 27 | 39 | −12 | 37 | Relegation to Regional Preferente |
| 17 | Recambios Colón (R) | 36 | 7 | 10 | 19 | 22 | 46 | −24 | 31 | Relegation to Regional Preferente |
| 18 | Benigànim (R) | 36 | 6 | 7 | 23 | 32 | 78 | −46 | 25 | Relegation to Regional Preferente |
| 19 | Villajoyosa (R) | 36 | 5 | 4 | 27 | 14 | 64 | −50 | 19 | Relegation to Regional Preferente |
* 1 2 Villarreal C finished ahead of Athletic Torrellano on head-to-head goal difference: Athletic Torrellano–Villarreal C 3–2, Villarreal C–Athletic Torrellano 3–0

### Group 7 – Community of Madrid
#### Teams retained from 2020–21 Tercera División

* Alcalá
* Alcorcón B
* Carabanchel
* Complutense
* Fuenlabrada Promesas (in the place of Flat Earth)
* Moratalaz
* Paracuellos Antamira
* Parla
* Pozuelo de Alarcón
* Rayo Vallecano B
* Torrejón
* Trival Valderas
* Villaverde San Andrés

#### Teams relegated from 2020–21 Segunda División B

* Atlético Madrid B
* Getafe B
* Las Rozas

#### Teams promoted from 2020 to 2021 Preferente de Madrid

* Galapagar
* Moscardó
* Tres Cantos
* Ursaria
* Villaviciosa de Odón

#### Teams and locations

| Team | City | Home ground |
| Alcalá | Alcalá de Henares | Municipal del Val |
| Alcorcón B | Alcorcón | Anexo de Santo Domingo |
| Atlético Madrid B | Madrid | Cerro del Espino |
| Carabanchel | Madrid | La Mina |
| Complutense | Alcalá de Henares | Recinto Ferial |
| Fuenlabrada Promesas | Fuenlabrada | La Aldehuela |
| Galapagar | Galapagar | El Chopo |
| Getafe B | Getafe | Ciudad Deportiva |
| Las Rozas | Las Rozas | Dehesa de Navalcarbón |
| Moratalaz | Madrid | La Dehesa |
| Moscardó | Madrid | Román Valero |
| Paracuellos Antamira | Paracuellos de Jarama | Polideportivo |
| Parla | Parla | Los Prados |
| Pozuelo de Alarcón | Pozuelo de Alarcón | Valle de las Cañas |
| Rayo Vallecano B | Madrid | Ciudad Deportiva |
| Torrejón | Torrejón de Ardoz | Las Veredillas |
| Tres Cantos | Tres Cantos | La Foresta |
| Trival Valderas | Alcorcón | La Canaleja |
| Ursaria | Madrid | Municipal San Blas |
| Villaverde San Andrés | Madrid | Boetticher |
| Villaviciosa de Odón | Villaviciosa de Odón | Nuevo Municipal |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Atlético Madrid B (C, P) | 40 | 29 | 8 | 3 | 82 | 26 | +56 | 95 | Promotion to Segunda División RFEF |
| 2 | Las Rozas | 40 | 22 | 9 | 9 | 68 | 35 | +33 | 75 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Fuenlabrada Promesas | 40 | 20 | 12 | 8 | 61 | 42 | +19 | 72 | Qualification for the promotion play-offs |
| 4 | Alcorcón B (O, P) | 40 | 19 | 12 | 9 | 63 | 39 | +24 | 69 | Qualification for the promotion play-offs |
| 5 | Paracuellos Antamira | 40 | 19 | 9 | 12 | 56 | 44 | +12 | 66 | Qualification for the promotion play-offs |
| 6 | Ursaria | 40 | 16 | 16 | 8 | 47 | 27 | +20 | 64 | |
| 7 | Alcalá | 40 | 18 | 10 | 12 | 45 | 40 | +5 | 64 | |
| 8 | Getafe B | 40 | 17 | 10 | 13 | 56 | 46 | +10 | 61 | |
| 9 | Rayo Vallecano B | 40 | 15 | 12 | 13 | 59 | 43 | +16 | 57 | |
| 10 | Torrejón | 40 | 16 | 9 | 15 | 55 | 48 | +7 | 57 | |
| 11 | Pozuelo de Alarcón | 40 | 15 | 12 | 13 | 39 | 45 | −6 | 57 | |
| 12 | Galapagar | 40 | 16 | 8 | 16 | 50 | 57 | −7 | 56 | |
| 13 | Trival Valderas | 40 | 13 | 14 | 13 | 40 | 42 | −2 | 53 | |
| 14 | Parla | 40 | 14 | 10 | 16 | 46 | 46 | 0 | 52 | |
| 15 | Tres Cantos (R) | 40 | 13 | 8 | 19 | 41 | 52 | −11 | 47 | Relegation to Preferente de Madrid |
| 16 | Villaverde San Andrés (R) | 40 | 13 | 6 | 21 | 35 | 45 | −10 | 45 | Relegation to Preferente de Madrid |
| 17 | Moratalaz (R) | 40 | 12 | 7 | 21 | 46 | 73 | −27 | 43 | Relegation to Preferente de Madrid |
| 18 | Villaviciosa de Odón (R) | 40 | 10 | 8 | 22 | 47 | 73 | −26 | 38 | Relegation to Preferente de Madrid |
| 19 | Complutense (R) | 40 | 9 | 10 | 21 | 31 | 58 | −27 | 37 | Relegation to Preferente de Madrid |
| 20 | Carabanchel (R) | 40 | 7 | 12 | 21 | 42 | 69 | −27 | 33 | Relegation to Preferente de Madrid |
| 21 | Moscardó (R) | 40 | 5 | 2 | 33 | 20 | 79 | −59 | 17 | Relegation to Preferente de Madrid |
* 1 2 Ursaria finished ahead of Alcalá on head-to-head goal difference: Ursaria–Alcalá 2–0, Alcalá–Ursaria 2–1
* 1 2 3 Rayo Vallecano B finished ahead of Torrejón and Pozuelo de Alarcón on head-to-head points: Rayo Vallecano B 7 pts, Torrejón 6 pts, Pozuelo de Alarcón 4 pts

### Group 8 – Castile and León
#### Teams retained from 2020–21 Tercera División

* Almazán
* Arandina
* Atlético Astorga
* Atlético Bembibre
* Atlético Tordesillas
* Ávila
* Colegios Diocesanos
* Júpiter Leonés
* La Virgen del Camino
* Mirandés B
* Numancia B
* Salamanca B
* Santa Marta

#### Teams relegated from 2020–21 Segunda División B

* Guijuelo

#### Teams promoted from 2020 to 2021 Primera Regional

* Ciudad Rodrigo
* Palencia
* Ribert

#### Teams and locations

| Team | City | Home ground |
| Almazán | Almazán | La Arboleda |
| Arandina | Aranda de Duero | El Montecillo |
| Atlético Astorga | Astorga | La Eragudina |
| Atlético Bembibre | Bembibre | La Devesa |
| Atlético Tordesillas | Tordesillas | Las Salinas |
| Ávila | Ávila | Adolfo Suárez |
| Colegios Diocesanos | Ávila | Sancti Spiritu |
| Ciudad Rodrigo | Ciudad Rodrigo | Francisco Mateos |
| Guijuelo | Guijuelo | Luis Ramos |
| Júpiter Leonés | León | Puente Castro |
| La Virgen del Camino | La Virgen del Camino, Valverde de la Virgen | Los Dominicos |
| Mirandés B | Miranda de Ebro | Ence |
| Numancia B | Soria | Francisco Rubio |
| Palencia | Palencia | Nueva Balastera |
| Ribert | Salamanca | Pistas del Helmántico |
| Salamanca UDS B | Salamanca | Pistas del Helmántico |
| Santa Marta | Santa Marta de Tormes | Alfonso San Casto |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Guijuelo (C, P) | 32 | 22 | 9 | 1 | 61 | 16 | +45 | 75 | Promotion to Segunda División RFEF and qualification for Copa del Rey |
| 2 | Almazán | 32 | 20 | 4 | 8 | 51 | 28 | +23 | 64 | Qualification for the promotion play-offs and Copa del Rey |
| 3 | Ávila | 32 | 17 | 7 | 8 | 45 | 25 | +20 | 58 | Qualification for the promotion play-offs |
| 4 | Mirandés B | 32 | 15 | 10 | 7 | 36 | 24 | +12 | 55 | Qualification for the promotion play-offs |
| 5 | Atlético Tordesillas (O) | 32 | 15 | 9 | 8 | 37 | 28 | +9 | 54 | Qualification for the promotion play-offs |
| 6 | Júpiter Leonés | 32 | 15 | 9 | 8 | 55 | 37 | +18 | 54 | |
| 7 | Arandina | 32 | 15 | 8 | 9 | 39 | 22 | +17 | 53 | |
| 8 | Palencia | 32 | 14 | 5 | 13 | 45 | 36 | +9 | 47 | |
| 9 | Atlético Astorga | 32 | 12 | 6 | 14 | 33 | 37 | −4 | 42 | |
| 10 | Atlético Bembibre | 32 | 11 | 7 | 14 | 32 | 40 | −8 | 40 | |
| 11 | La Virgen del Camino | 32 | 10 | 9 | 13 | 28 | 34 | −6 | 39 | |
| 12 | Numancia B | 32 | 9 | 9 | 14 | 40 | 48 | −8 | 36 | |
| 13 | Santa Marta | 32 | 10 | 5 | 17 | 37 | 49 | −12 | 35 | |
| 14 | Ribert (R) | 32 | 7 | 11 | 14 | 34 | 49 | −15 | 32 | Relegation to Primera Regional |
| 15 | Salamanca UDS B (R) | 32 | 8 | 6 | 18 | 22 | 51 | −29 | 30 | Relegation to Primera Regional |
| 16 | Ciudad Rodrigo (R) | 32 | 5 | 5 | 22 | 29 | 65 | −36 | 20 | Relegation to Primera Regional |
| 17 | Colegios Diocesanos (R) | 32 | 4 | 7 | 21 | 21 | 56 | −35 | 19 | Relegation to Primera Regional |
* 1 2 Atlético Tordesillas finished ahead of Júpiter Leonés on head-to-head points: Atlético Tordesillas–Júpiter Leonés 1–1, Júpiter Leonés–Atlético Tordesillas 0–2

### Group 9 – Eastern Andalusia and Melilla
#### Teams retained from 2020–21 Tercera División

* Alhaurín de la Torre
* Alhaurino
* Almería B
* Atlético Malagueño
* Atlético Porcuna
* Ciudad de Torredonjimeno
* El Palo
* Huétor Tájar
* Huétor Vega
* Jaén
* Juventud Torremolinos
* Motril
* Torreperogil

#### Teams relegated from 2020–21 Segunda División B

* Marbella

#### Teams promoted from 2020 to 2021 División de Honor

* San Pedro
* Torre del Mar

#### Teams promoted from 2020 to 2021 Preferente de Melilla

* Intergym Melilla

#### Teams and locations

| Team | City | Home ground |
| Alhaurín de la Torre | Alhaurín de la Torre | Los Manantiales |
| Alhaurino | Alhaurín El Grande | Miguel Fijones |
| Almería B | Almería | Estadio de los Juegos Mediterráneos |
| Atlético Malagueño | Málaga | El Viso |
| Atlético Porcuna | Porcuna | San Benito |
| Ciudad de Torredonjimeno | Torredonjimeno | Matías Prats |
| El Palo | Málaga | San Ignacio |
| Huétor Tájar | Huétor-Tájar | Miguel Moranto |
| Huétor Vega | Huétor Vega | Las Viñas |
| Intergym Melilla | Melilla | La Espiguera |
| Jaén | Jaén | La Victoria |
| Juventud Torremolinos | Torremolinos | El Pozuelo |
| Marbella | Marbella | Municipal de Marbella |
| Motril | Motril | Escribano Castilla |
| San Pedro | San Pedro de Alcántara | Municipal |
| Torre del Mar | Torre del Mar | Juan Manuel Azuaga |
| Torreperogil | Torreperogil | Abdón Martínez Fariñas |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Juventud Torremolinos (C, P, Q) | 32 | 17 | 12 | 3 | 45 | 21 | +24 | 63 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Huétor Tájar | 32 | 16 | 10 | 6 | 56 | 30 | +26 | 58 | Qualification for the promotion play-offs |
| 3 | Marbella | 32 | 18 | 4 | 10 | 53 | 26 | +27 | 58 | Qualification for the promotion play-offs |
| 4 | Almería B | 32 | 16 | 9 | 7 | 59 | 31 | +28 | 57 | Qualification for the promotion play-offs |
| 5 | Atlético Malagueño | 32 | 17 | 6 | 9 | 51 | 38 | +13 | 57 | Qualification for the promotion play-offs |
| 6 | Motril | 32 | 17 | 5 | 10 | 59 | 37 | +22 | 56 | |
| 7 | Ciudad de Torredonjimeno | 32 | 14 | 13 | 5 | 55 | 35 | +20 | 55 | |
| 8 | Torre del Mar | 32 | 14 | 7 | 11 | 52 | 40 | +12 | 49 | |
| 9 | Atlético Porcuna | 32 | 11 | 9 | 12 | 42 | 47 | −5 | 42 | |
| 10 | El Palo | 32 | 11 | 8 | 13 | 40 | 40 | 0 | 41 | |
| 11 | Huétor Vega | 32 | 9 | 12 | 11 | 33 | 38 | −5 | 39 | |
| 12 | Torreperogil | 32 | 10 | 8 | 14 | 28 | 36 | −8 | 38 | |
| 13 | Jaén | 32 | 9 | 12 | 11 | 31 | 43 | −12 | 36 | |
| 14 | Alhaurín de la Torre (R) | 32 | 9 | 7 | 16 | 28 | 49 | −21 | 34 | Relegation to División de Honor |
| 15 | San Pedro (R) | 32 | 7 | 7 | 18 | 26 | 48 | −22 | 28 | Relegation to División de Honor |
| 16 | Alhaurino (R) | 32 | 6 | 9 | 17 | 40 | 53 | −13 | 27 | Relegation to División de Honor |
| 17 | Intergym Melilla (R) | 32 | 0 | 4 | 28 | 13 | 99 | −86 | 4 | Relegation to División de Honor |
* 1 2 Huétor Tájar finished ahead of Marbella on head-to-head points: Marbella–Huétor Tájar 0–1, Huétor Tájar–Marbella 3–2
* 1 2 Marbella was awarded a 0–3 win in their Round 17 match against Alhaurín de la Torre after the latter fielded an ineligible player. The match originally ended 0–0.
* 1 2 Almería B finished ahead of Atlético Malagueño on head-to-head goal difference: Atlético Malagueño–Almería B 1–0, Almería B–Atlético Malagueño 2–0
* 1 2 Motril was awarded a 0–3 win in their Round 2 match against Jaén after the latter failed to show up to the match. Jaén was subsequently deducted three points.

### Group 10 – Western Andalusia and Ceuta
#### Teams retained from 2020–21 Tercera División

* Atlético Antoniano
* Cabecense
* Ciudad de Lucena
* Conil
* Córdoba B
* Gerena
* Los Barrios
* Pozoblanco
* Puente Genil
* Rota
* Sevilla C
* Utrera
* Xerez

#### Teams relegated from 2020–21 Segunda División B

* Recreativo

#### Teams promoted from 2020 to 2021 División de Honor

* Cartaya
* Tomares

#### Teams promoted from 2020 to 2021 Preferente de Ceuta

* Ceuta B

#### Teams and locations

| Team | City | Home ground |
| Atlético Antoniano | Lebrija | Municipal |
| Cabecense | Las Cabezas de San Juan | Carlos Marchena |
| Cartaya | Cartaya | Luis Rodríguez Salvador |
| Ceuta B | Ceuta | Alfonso Murube |
| Ciudad de Lucena | Lucena | Ciudad de Lucena |
| Conil | Conil de la Frontera | José Antonio Pérez Ureba |
| Córdoba B | Córdoba | Rafael Gómez |
| Gerena | Gerena | José Juan Romero Gil |
| Los Barrios | Los Barrios | San Rafael |
| Pozoblanco | Pozoblanco | Municipal |
| Puente Genil | Puente Genil | Manuel Polinario |
| Recreativo | Huelva | Nuevo Colombino |
| Rota | Rota | Alcalde Navarro Flores |
| Sevilla C | Seville | José Ramón Cisneros Palacios |
| Tomares | Tomares | Municipal San Sebastián |
| Utrera | Utrera | San Juan Bosco |
| Xerez | Jerez de la Frontera | La Juventud |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Recreativo (C, P, Q) | 32 | 24 | 5 | 3 | 57 | 20 | +37 | 77 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Utrera (P) | 32 | 20 | 7 | 5 | 59 | 26 | +33 | 67 | Qualification for the promotion play-offs |
| 3 | Xerez | 32 | 18 | 8 | 6 | 50 | 24 | +26 | 62 | Qualification for the promotion play-offs |
| 4 | Ciudad de Lucena | 32 | 18 | 6 | 8 | 45 | 25 | +20 | 60 | Qualification for the promotion play-offs |
| 5 | Gerena | 32 | 18 | 4 | 10 | 53 | 31 | +22 | 58 | Qualification for the promotion play-offs |
| 6 | Córdoba B | 32 | 17 | 7 | 8 | 54 | 33 | +21 | 58 | |
| 7 | Puente Genil | 32 | 13 | 6 | 13 | 36 | 41 | −5 | 45 | |
| 8 | Sevilla C | 32 | 13 | 4 | 15 | 40 | 48 | −8 | 43 | |
| 9 | Ceuta B | 32 | 9 | 10 | 13 | 26 | 39 | −13 | 37 | |
| 10 | Conil | 32 | 10 | 6 | 16 | 30 | 49 | −19 | 36 | |
| 11 | Rota | 32 | 9 | 9 | 14 | 31 | 45 | −14 | 36 | |
| 12 | Pozoblanco | 32 | 8 | 10 | 14 | 37 | 49 | −12 | 34 | |
| 13 | Atlético Antoniano | 32 | 8 | 10 | 14 | 29 | 35 | −6 | 34 | |
| 14 | Cartaya | 32 | 8 | 9 | 15 | 26 | 30 | −4 | 33 | |
| 15 | Tomares (R) | 32 | 9 | 4 | 19 | 27 | 46 | −19 | 31 | Relegation to División de Honor |
| 16 | Cabecense (R) | 32 | 6 | 5 | 21 | 25 | 51 | −26 | 23 | Relegation to División de Honor |
| 17 | Los Barrios (R) | 32 | 5 | 8 | 19 | 26 | 59 | −33 | 23 | Relegation to División de Honor |
* 1 2 Gerena finished ahead of Córdoba B on overall goal difference
* 1 2 Conil finished ahead of Rota on head-to-head goal difference: Rota–Conil 2–1, Conil–Rota 3–1
* 1 2 Pozoblanco finished ahead of Atlético Antoniano on head-to-head points: Atlético Antoniano–Pozoblanco 1–1, Pozoblanco–Atlético Antoniano 2–0
* 1 2 Cabecense finished ahead of Los Barrios on head-to-head goal difference: Los Barrios–Cabecense 3–1, Cabecense–Los Barrios 3–0

### Group 11 – Balearic Islands
#### Teams retained from 2020–21 Tercera División

* Binissalem
* Collerense
* Constància
* Felanitx
* Llosetense
* Mallorca B
* Manacor
* Platges de Calvià
* Portmany
* Sant Jordi
* Sant Rafel
* Santanyí
* Sóller

#### Teams relegated from 2020–21 Segunda División B

* Poblense

#### Teams promoted from 2020 to 2021 Regional

* Campos
* Inter Ibiza
* Mercadal
* Murense
* Rotlet Molinar
* Serverense
* Son Verí

#### Teams and locations

| Team | City | Home ground |
| Binissalem | Binissalem | Miquel Pons |
| Campos | Campos | Municipal |
| Collerense | Es Coll d'en Rabassa, Palma | Ca Na Paulina |
| Constància | Inca | Municipal |
| Felanitx | Felanitx | Es Torrentó |
| Inter Ibiza | Ibiza | Can Cantó |
| Llosetense | Lloseta | Municipal |
| Mallorca B | Palma | Son Bibiloni |
| Manacor | Manacor | Na Capellera |
| Mercadal | Es Mercadal | San Martí |
| Murense | Muro | Municipal |
| Platges de Calvià | Magaluf, Calvià | Municipal de Magaluf |
| Poblense | Sa Pobla | Nou Camp |
| Portmany | Sant Antoni de Portmany | Sant Antoni |
| Rotlet Molinar | Palma | Rotlet Molinar |
| Sant Jordi | Sant Jordi de ses Salines, Sant Josep de sa Talaia | Kiko Serra |
| Sant Rafel | Sant Rafel de sa Creu, Sant Antoni de Portmany | Municipal |
| Santanyí | Santanyí | Municipal |
| Serverense | Son Servera | Ses Eres |
| Sóller | Sóller | En Maiol |
| Son Verí | Llucmajor | Municipal s'Arenal |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Mallorca B (C, P) | 40 | 32 | 5 | 3 | 105 | 27 | +78 | 101 | Promotion to Segunda División RFEF |
| 2 | Manacor | 40 | 26 | 4 | 10 | 74 | 42 | +32 | 82 | Qualification for the promotion play-offs and qualification for Copa del Rey |
| 3 | Poblense | 40 | 24 | 8 | 8 | 89 | 24 | +65 | 80 | Qualification for the promotion play-offs |
| 4 | Platges de Calvià | 40 | 22 | 11 | 7 | 56 | 27 | +29 | 77 | Qualification for the promotion play-offs |
| 5 | Llosetense | 40 | 22 | 9 | 9 | 62 | 36 | +26 | 75 | Qualification for the promotion play-offs |
| 6 | Santanyí | 40 | 23 | 6 | 11 | 66 | 46 | +20 | 75 | |
| 7 | Constància | 40 | 20 | 9 | 11 | 54 | 38 | +16 | 69 | |
| 8 | Sant Jordi | 40 | 20 | 8 | 12 | 57 | 46 | +11 | 68 | |
| 9 | Portmany | 40 | 17 | 11 | 12 | 55 | 51 | +4 | 62 | |
| 10 | Collerense | 40 | 17 | 7 | 16 | 45 | 49 | −4 | 58 | |
| 11 | Sóller | 40 | 16 | 9 | 15 | 46 | 52 | −6 | 57 | |
| 12 | Binissalem | 40 | 13 | 12 | 15 | 40 | 44 | −4 | 51 | |
| 13 | Mercadal | 40 | 11 | 12 | 17 | 54 | 51 | +3 | 45 | |
| 14 | Inter Ibiza (R) | 40 | 12 | 7 | 21 | 51 | 62 | −11 | 43 | Relegation to Regional |
| 15 | Rotlet Molinar (R) | 40 | 11 | 9 | 20 | 35 | 53 | −18 | 42 | Relegation to Regional |
| 16 | Sant Rafel (R) | 40 | 10 | 10 | 20 | 48 | 64 | −16 | 40 | Relegation to Regional |
| 17 | Campos (R) | 40 | 10 | 10 | 20 | 38 | 64 | −26 | 40 | Relegation to Regional |
| 18 | Felanitx (R) | 40 | 9 | 11 | 20 | 43 | 65 | −22 | 38 | Relegation to Regional |
| 19 | Serverense (R) | 40 | 8 | 7 | 25 | 35 | 74 | −39 | 31 | Relegation to Regional |
| 20 | Murense (R) | 40 | 5 | 8 | 27 | 31 | 76 | −45 | 23 | Relegation to Regional |
| 21 | Son Verí (R) | 40 | 4 | 3 | 33 | 28 | 121 | −93 | 15 | Relegation to Regional |
* 1 2 Llosetense finished ahead of Santanyí on overall goal difference
* ↑ Relegated due to relegation of Andratx from Segunda División RFEF
* 1 2 Sant Rafel finished ahead of Campos on overall goal difference

### Group 12 – Canary Islands
#### Teams retained from 2020–21 Tercera División

* Arucas
* Atlético Paso
* Buzanada
* Gran Tarajal
* La Cuadra
* Lanzarote
* Las Palmas C
* Santa Úrsula
* Tenerife B
* Tenisca
* Unión Viera
* Vera
* Villa de Santa Brígida

#### Teams relegated from 2020–21 Segunda División B

* Marino

#### Teams promoted from 2020 to 2021 Interinsular Preferente

* Herbania
* Las Zocas
* Unión Sur Yaiza

#### Teams and locations

| Team | City | Home ground |
| Arucas | Arucas | Tonono |
| Atlético Paso | El Paso | Municipal |
| Buzanada | Buzanada, Arona | Clementina de Bello |
| Gran Tarajal | Tuineje | Municipal |
| Herbania | Puerto del Rosario | Municipal de Los Pozos |
| La Cuadra | Puerto del Rosario | Municipal de Los Pozos |
| Lanzarote | Arrecife | Ciudad Deportiva |
| Las Palmas C | Las Palmas | Anexo Gran Canaria |
| Las Zocas | San Miguel de Abona | Juanito Marrero |
| Marino | Los Cristianos, Arona | Antonio Domínguez Alfonso |
| Santa Úrsula | Santa Úrsula | Argelio Tabares |
| Tenerife B | Santa Cruz de Tenerife | Centro Insular |
| Tenisca | Santa Cruz de La Palma | Virgen de las Nieves |
| Unión Sur Yaiza | Yaiza | Municipal |
| Unión Viera | Las Palmas | Alfonso Silva |
| Vera | Puerto de la Cruz | Salvador Ledesma |
| Villa de Santa Brígida | Santa Brígida | El Guiniguada |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Atlético Paso (C, P, Q) | 32 | 17 | 8 | 7 | 44 | 27 | +17 | 59 | Qualification for the promotion play-offs and qualification for Copa del Rey |
| 2 | Las Palmas C (E, R) | 32 | 18 | 4 | 10 | 47 | 30 | +17 | 58 | Relegation to Interinsular Preferente |
| 3 | Tenerife B (Q) | 32 | 17 | 6 | 9 | 49 | 31 | +18 | 57 | Qualification for the promotion play-offs |
| 4 | Arucas (E) | 32 | 17 | 5 | 10 | 44 | 30 | +14 | 56 | Qualification for the promotion play-offs |
| 5 | Villa de Santa Brígida (E) | 32 | 14 | 6 | 12 | 45 | 37 | +8 | 48 | Qualification for the promotion play-offs |
| 6 | Unión Sur Yaiza | 32 | 15 | 2 | 15 | 42 | 43 | −1 | 47 | |
| 7 | Gran Tarajal | 32 | 13 | 8 | 11 | 46 | 40 | +6 | 47 | |
| 8 | Santa Úrsula | 32 | 13 | 7 | 12 | 35 | 37 | −2 | 46 | |
| 9 | La Cuadra | 32 | 12 | 10 | 10 | 46 | 35 | +11 | 46 | |
| 10 | Marino | 32 | 14 | 3 | 15 | 37 | 30 | +7 | 45 | |
| 11 | Lanzarote | 32 | 11 | 11 | 10 | 28 | 24 | +4 | 44 | |
| 12 | Buzanada | 32 | 13 | 5 | 14 | 35 | 33 | +2 | 44 | |
| 13 | Herbania (R) | 32 | 12 | 7 | 13 | 27 | 33 | −6 | 43 | Relegation to Interinsular Preferente |
| 14 | Tenisca (R) | 32 | 10 | 10 | 12 | 37 | 45 | −8 | 40 | Relegation to Interinsular Preferente |
| 15 | Vera (R) | 32 | 12 | 4 | 16 | 27 | 37 | −10 | 40 | Relegation to Interinsular Preferente |
| 16 | Unión Viera (R) | 32 | 8 | 6 | 18 | 24 | 51 | −27 | 30 | Relegation to Interinsular Preferente |
| 17 | Las Zocas (R) | 32 | 3 | 4 | 25 | 14 | 64 | −50 | 13 | Relegation to Interinsular Preferente |
* ↑ Las Palmas C was relegated due to Las Palmas Atlético's relegation from Segunda División RFEF
* 1 2 Unión Sur Yaiza finished ahead of Gran Tarajal on head-to-head points: Unión Sur Yaiza–Gran Tarajal 5–3, Gran Tarajal–Unión Sur Yaiza 1–1
* 1 2 Santa Úrsula finished ahead of La Cuadra on head-to-head points: Santa Úrsula–La Cuadra 1–0, La Cuadra–Santa Úrsula 0–0
* 1 2 Lanzarote finished ahead of Buzanada on overall goal difference
* 1 2 Relegated due to relegations of regional teams from Segunda División RFEF
* 1 2 Tenisca finished ahead of Vera on head-to-head points: Tenisca–Vera 1–0, Vera–Tenisca 0–1

### Group 13 – Region of Murcia
#### Teams retained from 2020–21 Tercera División

* Bullense
* Cartagena B
* Cartagena FC
* Ciudad de Murcia
* El Palmar
* Huércal-Overa
* La Unión Atlético
* Los Garres
* Mazarrón
* Minera
* Murcia Imperial
* Racing Murcia
* UCAM Murcia B

#### Teams relegated from 2020–21 Segunda División B

* Lorca Deportiva
* Yeclano

#### Teams promoted from 2020 to 2021 Preferente Autonómica

* Archena Sport
* Bala Azul
* Caravaca

#### Teams and locations

| Team | City | Home ground |
| Archena Sport | Archena | La Hoya |
| Bala Azul | Mazarrón | Playa Sol |
| Bullense | Bullas | Nicolás de las Peñas |
| Caravaca | Caravaca de la Cruz | El Morao |
| Cartagena B | Cartagena | Ciudad Jardín |
| Cartagena FC | Cartagena | Gómez Meseguer |
| Ciudad de Murcia | Murcia | José Barnés |
| El Palmar | El Palmar, Murcia | Municipal |
| Huércal-Overa | Huércal-Overa (Andalusia) | El Hornillo |
| La Unión | La Unión | Municipal |
| Lorca Deportiva | Lorca | Francisco Artés Carrasco |
| Los Garres | Murcia | Las Tejeras |
| Mazarrón | Mazarrón | Municipal |
| Minera | Llano del Beal, Cartagena | Ángel Cedrán |
| Murcia Imperial | Murcia | Campus Universitario |
| Racing Murcia | Dolores de Pacheco, Torre-Pacheco | Polideportivo Municipal |
| UCAM Murcia B | Sangonera la Verde | El Mayayo |
| Yeclano | Yecla | La Constitución |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Yeclano (C, P, Q) | 34 | 24 | 8 | 2 | 71 | 21 | +50 | 80 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Cartagena B (Q) | 34 | 17 | 9 | 8 | 61 | 32 | +29 | 60 | Qualification for the promotion play-offs |
| 3 | Racing Murcia (E) | 34 | 15 | 12 | 7 | 48 | 27 | +21 | 57 | Qualification for the promotion play-offs |
| 4 | UCAM Murcia B (E) | 34 | 15 | 9 | 10 | 49 | 34 | +15 | 54 | Qualification for the promotion play-offs |
| 5 | La Unión Atlético (E) | 34 | 15 | 9 | 10 | 44 | 31 | +13 | 54 | Qualification for the promotion play-offs |
| 6 | Lorca Deportiva | 34 | 15 | 10 | 9 | 52 | 42 | +10 | 53 | |
| 7 | Murcia Imperial | 34 | 14 | 9 | 11 | 49 | 46 | +3 | 51 | |
| 8 | Caravaca | 34 | 13 | 11 | 10 | 44 | 40 | +4 | 50 | |
| 9 | Ciudad de Murcia | 34 | 13 | 8 | 13 | 47 | 45 | +2 | 47 | |
| 10 | Bullense | 34 | 12 | 7 | 15 | 33 | 49 | −16 | 43 | |
| 11 | El Palmar | 34 | 11 | 10 | 13 | 41 | 44 | −3 | 43 | |
| 12 | Archena Sport | 34 | 12 | 7 | 15 | 48 | 49 | −1 | 43 | |
| 13 | Minera | 34 | 12 | 6 | 16 | 39 | 51 | −12 | 42 | |
| 14 | Bala Azul | 34 | 10 | 10 | 14 | 30 | 45 | −15 | 40 | |
| 15 | Cartagena FC (R) | 34 | 10 | 8 | 16 | 35 | 49 | −14 | 38 | Relegation to Preferente Autonómica |
| 16 | Mazarrón (R) | 34 | 10 | 7 | 17 | 33 | 48 | −15 | 37 | Relegation to Preferente Autonómica |
| 17 | Huércal-Overa (R) | 34 | 5 | 10 | 19 | 26 | 54 | −28 | 25 | Relegation to Preferente Autonómica |
| 18 | Los Garres (R) | 34 | 4 | 8 | 22 | 23 | 66 | −43 | 20 | Relegation to Preferente Autonómica |
* 1 2 UCAM Murcia B finished ahead of La Unión Atlético on head-to-head points: UCAM Murcia B–La Unión Atlético 1–0, La Unión Atlético–UCAM Murcia B 0–0
* ↑ Lorca Deportiva deducted two points for failing to pay referees's wages three times during the season.
* 1 2 3 Bullense finished ahead of El Palmar and Archena Sport on head-to-head points: Bullense 7 pts, El Palmar 6 pts, Archena Sport 4 pts
* 1 2 Archena Sport awarded a 3–0 win after their Round 1 match vs Mazarrón after the latter fielded an ineligible player. The match originally ended 1–1

### Group 14 – Extremadura
#### Teams retained from 2020–21 Tercera División

* Aceuchal
* Arroyo
* Azuaga
* Calamonte
* Diocesano
* Extremadura B
* Jerez
* Llerenense
* Miajadas
* Moralo
* Olivenza
* Plasencia
* Trujillo

#### Teams promoted from Regional Preferente

* Badajoz B
* Don Álvaro
* Villafranca

#### Teams and locations

| Team | City | Home ground |
| Aceuchal | Aceuchal | Municipal |
| Arroyo | Arroyo de la Luz | Municipal |
| Azuaga | Azuaga | Municipal |
| Badajoz B | Badajoz | Nuevo Vivero |
| Calamonte | Calamonte | Municipal |
| Diocesano | Cáceres | Campos de la Federación |
| Don Álvaro | Don Álvaro | Manuel Barrero Pedro Macias |
| Extremadura B | Almendralejo | Tomás de la Hera |
| Jerez | Jerez de los Caballeros | Manuel Calzado Galván |
| Llerenense | Llerena | Fernando Robina |
| Miajadas | Miajadas | Municipal |
| Moralo | Navalmoral de la Mata | Municipal |
| Olivenza | Olivenza | Municipal |
| Plasencia | Plasencia | Ciudad Deportiva |
| Trujillo | Trujillo | Julián García de Guadiana |
| Villafranca | Villafranca de los Barros | Municipal |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Diocesano (C, P, Q) | 30 | 20 | 3 | 7 | 61 | 30 | +31 | 63 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Moralo | 30 | 14 | 10 | 6 | 39 | 19 | +20 | 52 | Qualification for the promotion play-offs |
| 3 | Llerenense | 30 | 13 | 12 | 5 | 44 | 32 | +12 | 51 | Qualification for the promotion play-offs |
| 4 | Jerez | 30 | 14 | 7 | 9 | 38 | 30 | +8 | 49 | Qualification for the promotion play-offs |
| 5 | Arroyo | 30 | 12 | 12 | 6 | 40 | 30 | +10 | 48 | Qualification for the promotion play-offs |
| 6 | Trujillo | 30 | 12 | 12 | 6 | 40 | 27 | +13 | 48 | |
| 7 | Azuaga | 30 | 12 | 12 | 6 | 41 | 31 | +10 | 48 | |
| 8 | Calamonte | 30 | 11 | 10 | 9 | 35 | 33 | +2 | 43 | |
| 9 | Plasencia | 30 | 10 | 8 | 12 | 24 | 29 | −5 | 38 | |
| 10 | Villafranca | 30 | 9 | 10 | 11 | 27 | 30 | −3 | 37 | |
| 11 | Olivenza | 30 | 7 | 12 | 11 | 31 | 35 | −4 | 33 | |
| 12 | Don Álvaro | 30 | 7 | 10 | 13 | 36 | 44 | −8 | 31 | |
| 13 | Miajadas | 30 | 8 | 5 | 17 | 30 | 48 | −18 | 29 | |
| 14 | Aceuchal (R) | 30 | 7 | 8 | 15 | 24 | 42 | −18 | 29 | Relegation to Regional Preferente |
| 15 | Badajoz B (R) | 30 | 6 | 9 | 15 | 24 | 38 | −14 | 27 | Relegation to Regional Preferente |
| 16 | Extremadura B (D) | 30 | 6 | 4 | 20 | 18 | 54 | −36 | 0 | Relegation to Regional Preferente |
* ↑ Diocesano awarded a 3–0 win over Extremadura B after the latter failed to show up in their Round 21 match. Extremadura B was subsequently deducted three points.
* ↑ Llerenense awarded a 0–3 win over Extremadura B after the latter failed to show up in their Round 20 match. Extremadura B was subsequently deducted three points.
* 1 2 3 Arroyo finished ahead of Trujillo and Azuaga on head-to-head points: Arroyo 8 pts, Trujillo 5 pts, Azuaga 2 pts
* 1 2 Miajadas finished ahead of Aceuchal on head-to-head goal difference: Aceuchal–Miajadas 0–4, Miajas–Aceuchal 1–3
* ↑ Extremadura B was expelled from the competition in Round 21 after two no-shows. All subsequent matches awarded 0–2 to their opponents.

### Group 15 – Navarre
#### Teams retained from 2020–21 Tercera División

* Atlético Cirbonero
* Beti Kozkor
* Beti Onak
* Burladés
* Cantolagua
* Corellano
* Cortes
* Valle de Egüés
* Huarte
* Murchante
* Pamplona
* Subiza
* Txantrea

#### Teams promoted from 2020 to 2021 Primera Autonómica

* Avance
* Azkoyen
* Gares

#### Teams and locations

| Team | City | Home ground |
| Atlético Cirbonero | Cintruénigo | San Juan |
| Avance | Ezcabarte | Igueldea |
| Azkoyen | Peralta | Las Luchas |
| Beti Kozkor | Lekunberri | Plazaola |
| Beti Onak | Villava | Lorenzo Goikoa |
| Burladés | Burlada | Ripagaina |
| Cantolagua | Sangüesa | Cantolagua |
| Corellano | Corella | José Luis de Arrese |
| Cortes | Cortes | San Francisco Javier |
| Gares | Puente la Reina | Osabidea |
| Huarte | Huarte/Uharte | Areta |
| Murchante | Murchante | San Roque |
| Pamplona | Pamplona | Bidezarra |
| Subiza | Subiza | Sotoburu |
| Txantrea | Pamplona | Txantrea |
| Valle de Egüés | Egüés | Sarriguren |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Atlético Cirbonero (C, P, Q) | 30 | 20 | 9 | 1 | 50 | 12 | +38 | 69 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Subiza (E) | 30 | 20 | 4 | 6 | 62 | 24 | +38 | 64 | Qualification for the promotion play-offs |
| 3 | Txantrea (Q) | 30 | 16 | 7 | 7 | 46 | 26 | +20 | 55 | Qualification for the promotion play-offs |
| 4 | Huarte (E) | 30 | 14 | 9 | 7 | 58 | 40 | +18 | 51 | Qualification for the promotion play-offs |
| 5 | Cantolagua (E) | 30 | 14 | 8 | 8 | 49 | 33 | +16 | 50 | Qualification for the promotion play-offs |
| 6 | Cortes | 30 | 14 | 6 | 10 | 39 | 24 | +15 | 48 | |
| 7 | Beti Onak | 30 | 12 | 8 | 10 | 37 | 30 | +7 | 44 | |
| 8 | Avance | 30 | 10 | 10 | 10 | 41 | 39 | +2 | 40 | |
| 9 | Pamplona | 30 | 11 | 5 | 14 | 24 | 30 | −6 | 38 | |
| 10 | Azkoyen | 30 | 10 | 7 | 13 | 32 | 51 | −19 | 37 | |
| 11 | Valle de Egüés | 30 | 11 | 4 | 15 | 38 | 49 | −11 | 37 | |
| 12 | Burladés | 30 | 8 | 9 | 13 | 35 | 39 | −4 | 33 | |
| 13 | Murchante | 30 | 9 | 5 | 16 | 29 | 50 | −21 | 32 | |
| 14 | Beti Kozkor (R) | 30 | 8 | 4 | 18 | 20 | 41 | −21 | 28 | Relegation to Primera Autonómica |
| 15 | Corellano (R) | 30 | 6 | 5 | 19 | 27 | 52 | −25 | 23 | Relegation to Primera Autonómica |
| 16 | Gares (R) | 30 | 4 | 6 | 20 | 20 | 67 | −47 | 18 | Relegation to Primera Autonómica |
* 1 2 Pamplona awarded a 3–0 win in their Round 15 match against Azkoyen after the latter fielded an ineligible player. The match originally ended 1–1.
* 1 2 Azkoyen finished ahead of Valle de Egüés on head-to-head goal difference: Valle de Egüés–Azkoyen 2–1, Azkoyen–Valle de Egüés 2–0

### Group 16 – La Rioja
#### Teams retained from 2020–21 Tercera División

* Agoncillo
* Alfaro
* Anguiano
* Arnedo
* Atlético Vianés
* Berceo
* Calahorra B
* Casalarreina
* La Calzada
* Oyonesa
* River Ebro
* Varea
* Yagüe

#### Teams relegated from 2020–21 Segunda División B

* Haro

#### Teams promoted from 2020 to 2021 Regional Preferente

* Cenicero
* Rápid

#### Teams and locations

| Team | City | Home ground |
| Agoncillo | Agoncillo | San Roque |
| Alfaro | Alfaro | La Molineta |
| Anguiano | Anguiano | Isla |
| Arnedo | Arnedo | Sendero |
| Atlético Vianés | Viana (Navarre) | Municipal |
| Berceo | Logroño | La Isla |
| Calahorra B | Calahorra | La Planilla |
| Casalarreina | Casalarreina | El Soto |
| Cenicero | Cenicero | Las Viñas |
| Haro | Haro | El Mazo |
| La Calzada | Santo Domingo de La Calzada | El Rollo |
| Oyonesa | Oyón (Basque Country) | El Espinar |
| Rápid | Murillo de Río Leza | El Rozo |
| River Ebro | Rincón de Soto | San Miguel |
| Varea | Varea, Logroño | Municipal |
| Yagüe | Logroño | El Salvador |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Arnedo (C, P, Q) | 30 | 20 | 8 | 2 | 62 | 25 | +37 | 68 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Alfaro (P) | 30 | 21 | 4 | 5 | 65 | 30 | +35 | 67 | Qualification for the promotion play-offs |
| 3 | Anguiano | 30 | 18 | 8 | 4 | 61 | 22 | +39 | 62 | Qualification for the promotion play-offs |
| 4 | Varea | 30 | 17 | 8 | 5 | 59 | 36 | +23 | 59 | Qualification for the promotion play-offs |
| 5 | Casalarreina | 30 | 17 | 6 | 7 | 55 | 34 | +21 | 57 | Qualification for the promotion play-offs |
| 6 | La Calzada | 30 | 17 | 5 | 8 | 43 | 23 | +20 | 56 | |
| 7 | Oyonesa | 30 | 14 | 3 | 13 | 39 | 33 | +6 | 45 | |
| 8 | Calahorra B | 30 | 13 | 5 | 12 | 58 | 44 | +14 | 44 | |
| 9 | Agoncillo | 30 | 10 | 6 | 14 | 28 | 41 | −13 | 36 | |
| 10 | Haro | 30 | 9 | 8 | 13 | 37 | 34 | +3 | 35 | |
| 11 | River Ebro | 30 | 10 | 3 | 17 | 36 | 48 | −12 | 33 | |
| 12 | Berceo | 30 | 9 | 4 | 17 | 40 | 47 | −7 | 31 | |
| 13 | Yagüe | 30 | 8 | 7 | 15 | 38 | 53 | −15 | 31 | |
| 14 | Atlético Vianés | 30 | 8 | 7 | 15 | 42 | 57 | −15 | 31 | |
| 15 | Rápid (R) | 30 | 4 | 4 | 22 | 24 | 88 | −64 | 16 | Relegation to Regional Preferente |
| 16 | Cenicero (R) | 30 | 1 | 2 | 27 | 10 | 82 | −72 | 5 | Relegation to Regional Preferente |
* 1 2 Berceo awarded a 0–3 win in their Round 1 match against Cenicero after the latter fielded an ineligible player. The match originally ended 1–0.
* 1 2 3 Berceo finished ahead of River Ebro on head-to-head goal difference: Berceo +2, Yagüe -1, Atlético Vianés -1. Yagüe finished ahead of Atlético Vianés on head-to-head goals scored: Yagüe 8, Atlético Vianés 6

### Group 17 – Aragon
#### Teams retained from 2020–21 Tercera División

* Atlético Monzón
* Barbastro
* Belchite 97
* Binéfar
* Borja
* Calamocha
* Cariñena
* Cuarte
* Deportivo Aragón
* Épila
* Illueca
* Robres
* Utebo

#### Teams promoted from 2020 to 2021 Regional Preferente

* Biescas
* Caspe
* Giner Torrero
* Santa Anastasia

#### Teams and locations

| Team | City | Home ground |
| Atlético Monzón | Monzón | Isidro Calderón |
| Barbastro | Barbastro | Municipal de los Deportes |
| Belchite 97 | Belchite | Municipal |
| Biescas | Biescas | Fernando Escartín |
| Binéfar | Binéfar | Los Olmos |
| Borja | Borja | Manuel Meler |
| Calamocha | Calamocha | Jumaya |
| Cariñena | Cariñena | La Platera |
| Caspe | Caspe | Los Rosales |
| Cuarte | Cuarte de Huerva | Nuevo Municipal |
| Deportivo Aragón | Zaragoza | Ciudad Deportiva |
| Épila | Épila | La Huerta |
| Giner Torrero | Zaragoza | Torrero |
| Illueca | Illueca | Papa Luna |
| Robres | Robres | San Blas |
| Santa Anastasia | Santa Anastasia | Fontanazas |
| Utebo | Utebo | Santa Ana |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Deportivo Aragón (C, P) | 32 | 20 | 7 | 5 | 65 | 29 | +36 | 67 | Promotion to Segunda División RFEF |
| 2 | Utebo (Q, P) | 32 | 20 | 6 | 6 | 63 | 28 | +35 | 66 | Qualification for the promotion play-offs and qualification for Copa del Rey |
| 3 | Illueca | 32 | 19 | 8 | 5 | 47 | 31 | +16 | 65 | Qualification for the promotion play-offs |
| 4 | Binéfar | 32 | 16 | 8 | 8 | 54 | 30 | +24 | 56 | Qualification for the promotion play-offs |
| 5 | Robres | 32 | 17 | 2 | 13 | 45 | 32 | +13 | 53 | Qualification for the promotion play-offs |
| 6 | Cuarte | 32 | 16 | 4 | 12 | 46 | 27 | +19 | 52 | |
| 7 | Atlético Monzón | 32 | 13 | 10 | 9 | 40 | 23 | +17 | 49 | |
| 8 | Barbastro | 32 | 13 | 9 | 10 | 36 | 29 | +7 | 48 | |
| 9 | Caspe | 32 | 13 | 9 | 10 | 46 | 37 | +9 | 48 | |
| 10 | Épila | 32 | 15 | 3 | 14 | 39 | 37 | +2 | 48 | |
| 11 | Cariñena | 32 | 13 | 6 | 13 | 36 | 45 | −9 | 45 | |
| 12 | Calamocha | 32 | 10 | 6 | 16 | 36 | 40 | −4 | 36 | |
| 13 | Belchite 97 | 32 | 8 | 9 | 15 | 35 | 43 | −8 | 33 | |
| 14 | Santa Anastasia (R) | 32 | 7 | 12 | 13 | 31 | 40 | −9 | 33 | Relegation to Regional Preferente |
| 15 | Borja (R) | 32 | 7 | 8 | 17 | 31 | 48 | −17 | 29 | Relegation to Regional Preferente |
| 16 | Giner Torrero (R) | 32 | 4 | 6 | 22 | 23 | 97 | −74 | 18 | Relegation to Regional Preferente |
| 17 | Biescas (R) | 32 | 1 | 7 | 24 | 10 | 67 | −57 | 10 | Relegation to Regional Preferente |
* 1 2 3 Barbastro finished ahead of Caspe and Épila on head-to-head points: Barbastro 10 pts, Caspe 5 pts, Épila 1 pt
* 1 2 Belchite 97 finished ahead of Santa Anastasia on overall goal difference

### Group 18 – Castilla–La Mancha
#### Teams retained from 2020–21 Tercera División

* Almansa
* Atlético Albacete
* Azuqueca
* Conquense
* Guadalajara
* Huracán Balazote
* Illescas
* La Roda
* Manchego
* Quintanar del Rey
* Tarancón
* Torrijos
* Villacañas

#### Teams relegated from 2020–21 Segunda División B

* Villarrobledo
* Villarrubia

#### Teams promoted from 2020 to 2021 Primera Autonómica Preferente

* Hogar Alcarreño
* Miguelturreño
* San Clemente

#### Teams and locations

| Team | City | Home ground |
| Almansa | Almansa | Paco Simón |
| Atlético Albacete | Albacete | Andrés Iniesta |
| Azuqueca | Azuqueca de Henares | San Miguel |
| Conquense | Cuenca | La Fuensanta |
| Guadalajara | Guadalajara | Pedro Escartín |
| Hogar Alcarreño | Guadalajara | Fuente la Niña |
| Huracán Balazote | Balazote | Municipal de Barrax |
| Illescas | Illescas, Toledo | Municipal |
| La Roda | La Roda | Estadio Municipal |
| Manchego | Ciudad Real | Juan Carlos I |
| Miguelturreño | Miguelturra | Municipal |
| Quintanar del Rey | Quintanar del Rey | San Marcos |
| San Clemente | San Clemente | Municipal |
| Tarancón | Tarancón | Municipal |
| Torrijos | Torrijos | San Francisco |
| Villacañas | Villacañas | Las Pirámides |
| Villarrobledo | Villarrobledo | Nuestra Señora de la Caridad |
| Villarrubia | Villarrubia de los Ojos | Nuevo Municipal |

#### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Guadalajara (C, P, Q) | 34 | 23 | 8 | 3 | 71 | 19 | +52 | 77 | Promotion to Segunda División RFEF and Qualification for Copa del Rey |
| 2 | Quintanar del Rey (Q) | 34 | 21 | 7 | 6 | 63 | 29 | +34 | 70 | Qualification for the promotion play-offs |
| 3 | Illescas (E) | 34 | 20 | 7 | 7 | 56 | 33 | +23 | 67 | Qualification for the promotion play-offs |
| 4 | Villarrobledo (E) | 34 | 18 | 10 | 6 | 53 | 25 | +28 | 64 | Qualification for the promotion play-offs |
| 5 | Torrijos (E) | 34 | 17 | 9 | 8 | 50 | 30 | +20 | 60 | Qualification for the promotion play-offs |
| 6 | Conquense | 34 | 15 | 11 | 8 | 49 | 30 | +19 | 56 | |
| 7 | Villarrubia | 34 | 16 | 7 | 11 | 45 | 38 | +7 | 55 | |
| 8 | Azuqueca | 34 | 16 | 6 | 12 | 55 | 40 | +15 | 54 | |
| 9 | Manchego | 34 | 15 | 9 | 10 | 50 | 26 | +24 | 54 | |
| 10 | Tarancón | 34 | 16 | 3 | 15 | 46 | 45 | +1 | 51 | |
| 11 | Villacañas | 34 | 13 | 7 | 14 | 47 | 51 | −4 | 46 | |
| 12 | Atlético Albacete | 34 | 11 | 11 | 12 | 47 | 40 | +7 | 44 | |
| 13 | Almansa | 34 | 12 | 7 | 15 | 44 | 51 | −7 | 43 | |
| 14 | Huracán Balazote (R) | 34 | 10 | 7 | 17 | 52 | 56 | −4 | 37 | Relegation to Primera Autonómica Preferente |
| 15 | San Clemente (R) | 34 | 10 | 6 | 18 | 30 | 50 | −20 | 36 | Relegation to Primera Autonómica Preferente |
| 16 | Miguelturreño (R) | 34 | 7 | 4 | 23 | 35 | 67 | −32 | 25 | Relegation to Primera Autonómica Preferente |
| 17 | Hogar Alcarreño (R) | 34 | 4 | 5 | 25 | 29 | 90 | −61 | 17 | Relegation to Primera Autonómica Preferente |
| 18 | La Roda (D) | 34 | 0 | 0 | 34 | 0 | 102 | −102 | 0 | Disqualified from competition |
* 1 2 Azuqueca finished ahead of Manchego on head-to-head points: Azuqueca–Manchego 2–0, Manchego–Azuqueca 0–0
* ↑ Relegated due to relegations of regional teams from Segunda División RFEF
* ↑ La Roda was disqualified from the competition for not paying its players. All opponents were subsequently awarded 3–0 wins.

## Copa del Rey qualification

25 teams qualified for the 2022–23 Copa del Rey: the best teams in each group (excluding reserves) and the 7 best second-placed teams ranked by their points coefficient. Should any second-placed team among these 7 qualify already as the best non-reserve team in its group, a ranking of third-placed teams would fill the remaining vacants.

### Ranking of second-placed teams

| Pos | Grp | Team | Pld | W | D | L | GF | GA | GD | Pts | Coeff | Qualification |
| 1 | 16 | Alfaro | 30 | 21 | 4 | 5 | 65 | 30 | +35 | 67 | 2.233 | Qualification for Copa del Rey |
| 2 | 15 | Subiza | 30 | 20 | 4 | 6 | 62 | 24 | +38 | 64 | 2.133 | Qualification for Copa del Rey |
| 3 | 10 | Utrera | 32 | 20 | 7 | 5 | 59 | 26 | +33 | 67 | 2.094 | Qualification for Copa del Rey |
| 4 | 1 | Ourense CF | 32 | 19 | 10 | 3 | 48 | 21 | +27 | 67 | 2.094 | Qualification for Copa del Rey |
| 5 | 17 | Utebo | 32 | 20 | 6 | 6 | 63 | 28 | +35 | 66 | 2.063 | Qualification for Copa del Rey |
| 6 | 18 | Quintanar del Rey | 34 | 21 | 7 | 6 | 63 | 29 | +34 | 70 | 2.059 | Qualification for Copa del Rey |
| 7 | 11 | Manacor | 40 | 26 | 4 | 10 | 74 | 42 | +32 | 82 | 2.050 | Qualification for Copa del Rey |
| 8 | 8 | Almazán | 32 | 20 | 4 | 8 | 51 | 28 | +23 | 64 | 2.000 | Qualification for Copa del Rey |
| 9 | 2 | Sporting Gijón B | 38 | 21 | 11 | 6 | 71 | 25 | +46 | 74 | 1.947 | |
| 10 | 5 | Olot | 32 | 18 | 7 | 7 | 53 | 32 | +21 | 61 | 1.906 | Qualification for Copa del Rey |
| 11 | 3 | Vimenor | 30 | 16 | 9 | 5 | 49 | 27 | +22 | 57 | 1.900 | Qualification for Copa del Rey |
| 12 | 7 | Las Rozas | 40 | 22 | 9 | 9 | 68 | 35 | +33 | 75 | 1.875 | Qualification for Copa del Rey |
| 13 | 4 | Beasain | 38 | 19 | 13 | 6 | 65 | 36 | +29 | 70 | 1.842 | Qualification for Copa del Rey |
| 14 | 9 | Huétor Tájar | 32 | 16 | 10 | 6 | 56 | 30 | +26 | 58 | 1.813 | |
| 15 | 12 | Las Palmas C | 32 | 18 | 4 | 10 | 47 | 30 | +17 | 58 | 1.813 | Relegation to Interinsular Preferente |
| 16 | 6 | Atlético Saguntino | 36 | 17 | 13 | 6 | 46 | 30 | +16 | 64 | 1.778 | Qualification for Copa del Rey |
| 17 | 13 | Cartagena B | 34 | 17 | 9 | 8 | 61 | 32 | +29 | 60 | 1.765 | |
| 18 | 14 | Moralo | 30 | 14 | 10 | 6 | 39 | 19 | +20 | 52 | 1.733 | |
* 1 2 3 4 5 6 Qualified as the best-classified team in its group after a reserve team
* ↑ Las Palmas C was relegated due to Las Palmas Atlético's relegation from Segunda División RFEF