Sellana (Greek: Σέλλανα) is a former municipality in the Karditsa regional unit, Thessaly, Greece, named after the ancient city of "Sellana" or "Silàna".

[3] The seat of the municipality was in Proastio, which has 1,434 inhabitants (2021).

Other communities in the municipal unit are those of Marathea (pop.

692), Agia Triada (548), Pedino (505) and Kalogriana (475).

The municipal unit Sellana is subdivided into the following communities (constituent villages in brackets):