Voio (,
Vóio; -
Boeon) is a
mountain range in the southwestern
Kastoria and western
Kozani regional units in
Greece. The mountain is part of the
Pindus mountains. Its highest elevation is 1,805 m. It is a densely forested and sparsely populated mountain range. It is drained towards the river
Sarantaporos in the west and towards the
Aliakmonas in the east. The nearest mountain ranges are
Gramos to the west and
Smolikas to the southwest.