1979–80 Segunda División B
The 1979–80 Segunda División B was the 3rd season of Segunda División B, the third highest level of the Spanish football league system, since its establishment in 1977. First and 2nd in each group were promoted to Segunda División, and the bottom four were relegated to the Tercera División.Group 1
A total of 20 teams will contest the group, including 2 relegated from the Segunda División and 4 promoted from the Tercera División.Teams relegated from 1978–79 Segunda División
Teams promoted from 1978–79 Tercera División
- Sporting Atlético was called CD Gijón until last season.
Results
Locations
Group 2
A total of 20 teams will contest the group, including 2 relegated from the Segunda División and 4 promoted from the Tercera División.Promotion and relegation
Teams relegated from 1978–79 Segunda División
Teams promoted from 1978–79 Tercera División
- Terrassa FC was called Tarrasa CF until last season.
- UD San Andrés was called CD San Andrés until last season.
Results
Locations
