1965–66 Tercera División
The 1965–66 Tercera División season was the 30th since its establishment.Group 1
Group 2
Group 3
Group 4
Group 5
Group 6 / 7
Group 8
Group 9
Group 10
Group 11
Group 12
Group 13
Group 14
Group 15
- Tiebreaker:
- Marbella received a bye.
Cartagena was qualified by beating 11 to 10 the number of corners, in the tiebreaker match.Second Round
- Tiebreaker:
- Tiebreaker:
Play-offs (Champions)
First Round
- Logroñés received a bye.
Second Round
- Tiebreaker:
