2002–03 Segunda División B
The 2002–03 Segunda División B season of began in August 2002 and ended in May 2003.
Summary before the 2002–03 season
Playoffs de Ascenso:- Barakaldo
- Cultural Leonesa
- Compostela (P)
- Pontevedra
- Barcelona B
- Espanyol B
- L'Hospitalet
- Terrassa (P)
- Real Madrid B
- Valencia B
- Hércules
- Getafe (P)
- Motril
- Ceuta
- Almería (P)
- Mérida
Relegated from Segunda División:
----
Promoted from Tercera División:
- Langreo
- Real Avilés
- Ribadesella
- Noja
- Racing de Santander B
- Palamós
- Gavà
- Reus
- Real Ávila
- Linares
- Torredonjimeno
- Corralejo
- Orihuela
- Cacereño
- Moralo
- Peralta
- Peña Sport
Relegated:
- Sporting de Gijón B
- Oviedo B
- Caudal
- Universidad de Oviedo
- Real Sociedad B
- Eibar B
- Huesca
- Alfaro
- Benidorm
- Vecindario
- Onda
- Mensajero
- Linense
- Dos Hermanas
- San Fernando
- Coria
- Beasain
Administrative relegation:
----
Occupied the vacant spots by administrative relegations:
Group I
Teams from Asturias, Canary Islands, Castile and León, Community of Madrid and Galicia.Teams
League table
Group II
Teams from Aragon, Basque Country, Cantabria, Castilla–La Mancha, La Rioja and NavarreTeams
| Team | Founded | Home city | Stadium |
| Alavés B | 1960 | Vitoria, Basque Country | José Luis Compañón |
| Amurrio | 1949 | Amurrio, Basque Country | Basarte |
| Athletic Bilbao B | 1964 | Bilbao, Basque Country | Lezama |
| Aurrerá Vitoria | 1935 | Vitoria, Basque Country | Olanrabe |
| Barakaldo | 1917 | Barakaldo, Basque Country | Ciudad Deportiva de San Vicente |
| Binéfar | 1922 | Binéfar, Aragon | Los Olmos |
| Calahorra | 1946 | Calahorra, La Rioja | La Planilla |
| Conquense | 1946 | Cuenca, Castilla–La Mancha | La Fuensanta |
| Gernika | 1922 | Gernika, Basque Country | Urbieta |
| Gimnástica Torrelavega | 1907 | Torrelavega, Cantabria | El Malecón |
| Logroñés | 1940 | Logroño, La Rioja | Las Gaunas |
| Noja | 1963 | Noja, Cantabria | La Caseta |
| Osasuna B | 1962 | Aranguren, Navarre | Tajonar |
| Peña Sport | 1925 | Tafalla, Navarre | San Francisco |
| Peralta | 1927 | Peralta, Navarre | Las Luchas |
| Racing Santander B | 1926 | Santander, Cantabria | La Albericia |
| Real Unión | 1915 | Irún, Basque Country | Stadium Gal |
| Talavera | 1948 | Talavera de la Reina, Castilla–La Mancha | El Prado |
| Toledo | 1928 | Toledo, Castilla–La Mancha | Salto del Caballo |
| Zaragoza B | 1958 | Zaragoza, Aragon | Ciudad Deportiva del Real Zaragoza |