1965–66 Tercera División

The 1965–66 Tercera División season was the 30th season since its establishment.

First round

 * Tiebreaker:


 * Marbella received a bye.

Cartagena was qualified by beating 11 to 10 the number of corners, in the tiebreaker match.

Second round

 * Tiebreaker:

Final Round

 * Tiebreaker:

First round

 * Logroñés received a bye.

Second round

 * Tiebreaker: