Sellana (Greek: Σέλλανα) is a former municipality in the Karditsa regional unit, Thessaly, Greece. Since the 2011 local government reform it is part of the municipality Palamas, of which it is a municipal unit. Population 5,051 (2001). The seat of the municipality was in Proastio, which has 1,833 inhabitants. Other communities in the municipal unit are those of Marathea, comprising the villages Marathea (709) and Korda (258), with a combined population of 967, Agia Triada (822), Pedino (720) and Kalogriana with a population count of 709.