Zalongo (Greek: Ζάλογγο) is a former municipality in the Preveza regional unit, Epirus, Greece.

Since the 2011 local government reform it is part of the municipality Preveza, of which it is a municipal unit.

Nearby is the 18th century Zalongo Monastery, immortalized by the defiant mass suicide of a group of Souliot women.

The ruins of ancient Cassope are situated near the village Kamarina.

This Epirus location article is a stub.