The Serie B 1966–67 was the thirty-fifth tournament of this competition played in Italy since its creation.

Savona, Arezzo and Salernitana had been promoted from Serie C, while Sampdoria, Catania and Varese had been relegated from Serie A.

The Genoa’s “derby” was played in Serie B for the first time.

Transitional promotions and relegations were imposed by the reduction of the Serie A.