Thespies (; before 1934: Erimókastro) is a village in Boeotia, Greece. A former municipality, which included the village, shared the same name. Since the 2011 local government reform it is part of the municipality Aliartos-Thespies, of which it is a municipal unit. Population 3,386 (2021). The municipal unit has an area of 108.152 km<sup>2</sup>, the community 12.725 km<sup>2</sup>.
Thespies is named after the ancient city of Thespiae. Thespies or then Erimokastro used to be an Arvanite settlement of 1,095 people in 1907.