Aliartos-Thespies (, until 2014: Aliartos) is a municipality in the Boeotia regional unit, Central Greece, Greece. The seat of the municipality is the town Aliartos. The municipality has an area of 256.507 km<sup>2</sup>.
The municipality Aliartos-Thespies was formed at the 2011 local government reform, according to the Kallikratis programme, by the merger of the following former municipalities, that became municipal units: