1983–84 Segunda División B
The 1983–84 Segunda División B season was the 7th since its establishment. The first matches of the season were played on 3 September 1983, and the season ended on 27 May 1984.
Overview before the season
40 teams joined the league, including four relegated from the 1982–83 Segunda División and 6 promoted from the 1982–83 Tercera División. The composition of the groups was determined by the Royal Spanish Football Federation, attending to geographical criteria.;Relegated from Segunda División:
;Promoted from Tercera División:
Group I
Teams
Teams from Andorra, Aragon, Asturias, Basque Country, Catalonia, Galicia and Navarre.| Team | Founded | Home city | Stadium |
| Alavés | 1921 | Vitoria-Gasteiz, Basque Country | Mendizorrotza |
| Endesa Andorra | 1957 | Andorra, Aragon | Juan Antonio Endeiza |
| FC Andorra | 1942 | Andorra la Vella, Andorra | Comunal |
| Arosa | 1945 | Vilagarcía de Arousa, Galicia | A Lomba |
| Real Avilés Industrial | 1903 | Avilés, Asturias | Muro de Zaro |
| Barakaldo | 1917 | Barakaldo, Basque Country | Lasesarre |
| Binéfar | 1922 | Binéfar, Aragon | El Segalar |
| Compostela | 1962 | Compostela, Galicia | Santa Isabel |
| Erandio | 1915 | Erandio, Basque Country | Nuevo Ategorri |
| Figueras | 1919 | Figueres, Catalonia | L'Alfar |
| Gimnástico de Tarragona | 1886 | Tarragona, Catalonia | Nou Estadi |
| Huesca | 1960 | Huesca, Aragon | El Alcoraz |
| Lérida | 1939 | Lleida, Catalonia | Camp d'Esports |
| Logroñés | 1940 | Logroño, La Rioja | Las Gaunas |
| Osasuna Promesas | 1962 | Pamplona, Navarre | Tajonar |
| Racing de Ferrol | 1919 | Ferrol, Galicia | Manuel Rivera |
| Sabadell | 1903 | Sabadell, Catalonia | La Nova Creu Alta |
| San Sebastián | 1951 | San Sebastián, Basque Country | Atotxa |
| Sestao | 1916 | Sestao, Basque Country | Las Llanas |
| Sporting Atlético | 1960 | Gijón, Asturias | Mareo |