The 1966–67 Tercera División season is the 33rd 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
Playoffs
Promotion to Segunda División (champions)
First round Olot received a bye.
Match of Tiebreaker:
Second round
Match of Tiebreaker:
Promoted to Segunda División Alcoyano Jaén Jerez Badajoz
Promotion to Segunda División (runners-up)
First round
Almería received a bye.
Second round
Match of Tiebreaker:
Final Round
Continue in Segunda División Langreo Burgos At. Ceuta Constancia
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