Valerianos (Greek: Βαλεριάνος) is a village and a community in the island of Cephalonia, Greece.

The community includes the villages Atsoupades and Plateies.

It is situated at the southeastern foot of Mount Ainos, at about 190 m elevation.

It is 0.5 km northwest of Chionata, 3 km southwest of Pastra, 9 km southwest of Poros and 23 km southeast of Argostoli.

Valerianos was devastated by the 1953 Ionian earthquake.