- Source: Spilaio, Grevena
Spilaio (Greek: Σπήλαιο) is a village and a community of the Grevena municipality. Before the 2011 local government reform, it was a part of the municipality of Theodoros Ziakas, of which it was a municipal district. The 2021 census recorded 194 residents in the village. The community of Spilaio covers an area of 39.504 km2.
See also
List of settlements in the Grevena regional unit