Kozani is a town in northern Greece, capital of Kozani regional unit and of Western Macedonia. It is located in the western part of Macedonia, in the northern part of the Aliakmonas river valley. The city lies 710 metres above sea level, 15 kilometres northwest of the artificial lake Polyfytos, 120 km south-west of Thessaloniki, between the mountains Pieria, Vermio, Vourinos and Askio. The population of the Kozani municipality is over 67,000 people. The climate of the area is continental with cold and dry winters, and hot summers.

Kozani is one of the regional units of Greece. It is part of the region of Western Macedonia, in the geographic region of Macedonia. Its capital is the city of Kozani.