Voio (Greek: Βόιο) is a municipality in the Kozani regional unit, Greece. The seat of the municipality is the town Siatista.[2] It was named after the Voio mountains. The municipality has an area of 1007.629 km2.[3] Its population at the 2021 census was 14,947.[1]
The municipality Voio was formed at the 2011 local government reform by the merger of the following 5 former municipalities, that became municipal units:[2]
The province of Voio (Greek: Επαρχία Βοΐου) was one of the provinces of the Kozani Prefecture. Its territory corresponded with that of the current municipality Voio.[4] It was abolished in 2006.