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.

[2] The 2021 census recorded 194 residents in the village.

[1] The community of Spilaio covers an area of 39.504 km2.

[3] This Western Macedonia location article is a stub.