2017–18 Segunda División B
The 2017–18 Segunda División B season was the 41st since its establishment. The first matches of the season were played on 20 August 2017, and the season ended June 2018 with the promotion play-off finals.Overview before the season
80 teams will join the league, including four relegated from the 2016–17 Segunda División and 18 promoted from the 2016–17 Tercera División. The composition of the groups was determined by the Royal Spanish Football Federation, attending to geographical criteria.
;Relegated from Segunda División:
- UCAM Murcia
- Mallorca
- Elche
- Mirandés
;Promoted from Tercera División:'''
- Atlético Madrid B
- Deportivo Aragón
- Badajoz
- Cerceda
- Écija
- Fabril
- Formentera
- Gimnástica Segoviana
- Las Palmas Atlético
- Lorca Deportiva
- Olot
- Ontinyent
- Peña Deportiva
- Peña Sport
- Peralada
- Rápido de Bouzas
- Real Betis B
- Sporting Gijón B
- Talavera de la Reina
- Unión Adarve
- Vitoria
Group 1
Teams and locations
League table
Results
Top goalscorers
| Goalscorers | Goals | Team |
 Dioni Villalba | 21 | Fuenlabrada |
 Yuri de Souza | 20 | Ponferradina |
| Juan Hernández | 14 | Celta B |
| Diego Silva | 13 | Coruxo |
| Héctor Gómez | 12 | Unión Adarve |
Top goalkeepers
| Goalkeeper | Goals | Matches | Average | Team |
| Brais Pereiro | 28 | 38 | | Rápido de Bouzas |
| Dani Sotres | 24 | 30 | | Celta B |
| Kike Royo | 29 | 33 | | Guijuelo |
| Isma Gil | 29 | 32 | | Navalcarnero |
| Basilio Sancho | 34 | 37 | | Rayo Majadahonda |
Group 2
Teams and locations
League table
Results
Top goalscorers
| Goalscorers | Goals | Team |
| Diego Cervero | 23 | Mirandés |
| Ander Vitoria | 17 | Barakaldo |
| Gorka Guruzeta | 16 | Bilbao Athletic |
| Rayco García | 16 | UD Logroñés |
| Jon Ander Pérez | 15 | Amorebieta |
Top goalkeepers
| Goalkeeper | Goals | Matches | Average | Team |
| Andoni Zubiaurre | 15 | 29 | | Real Sociedad B |
| Unai Simón | 18 | 29 | | Bilbao Athletic |
| Txusta | 22 | 34 | | Barakaldo |
| Mikel Saizar | 28 | 38 | | Burgos |
| Mikel Pagola | 31 | 37 | | Tudelano |
Group 3
Teams and locations
League table
Results
Top goalscorers
| Goalscorers | Goals | Team |
| Enric Gallego | 18 | Cornellà |
| Rafa Mir | 15 | Valencia Mestalla |
| Abdón Prats | 12 | Mallorca |
| Benja Martínez | 12 | Elche |
| Nino Martínez | 12 | Elche |
Top goalkeepers
| Goalkeeper | Goals | Matches | Average | Team |
| Manolo Reina | 27 | 35 | | Mallorca |
| Ismael Falcón | 29 | 37 | | Hércules |
| Roberto Gutiérrez | 29 | 37 | | Sabadell |
| Miguel Bañuz | 23 | 29 | | Alcoyano |
| José Juan Figueras | 29 | 36 | | Elche |
Group 4
Teams and locations
League table
Results
Top goalscorers
| Goalscorers | Goals | Team |
| Loren Morón | 17 | Betis Deportivo |
 Richard Boateng | 14 | Melilla |
| Isaac Aketxe | 13 | Cartagena |
| Marc Fernández | 12 | UCAM Murcia |
| Ezequiel Lamarca | 12 | Écija |
Top goalkeepers
| Goalkeeper | Goals | Matches | Average | Team |
| Dani Barrio | 17 | 29 | | Melilla |
| Wilfred Muñoz | 27 | 38 | | Marbella |
| Leandro Montagud | 28 | 34 | | Villanovense |
| Biel Ribas | 31 | 37 | | Murcia |
| Aarón Escandell | 26 | 31 | | Granada B |
Average attendances
This is a list of attendance data of the teams that give an official number. They include playoffs games:
