Kozani (, ; ) is a city in northern Greece, capital of Kozani regional unit and of West Macedonia region. It is located in the western part of Macedonia, in the northern part of the Aliakmonas river valley. The city lies above sea level, northwest of the artificial lake Polyfytos, south-west of Thessaloniki, between the mountains Pieria, Vermio, Vourinos and Askio. The population of the Kozani municipality is over 70,000 people. The climate of the area is continental with cold and dry winters, and hot summers.