Vasa County (Swedish: Vasa län, Finnish: Vaasan lääni) is a county in Sweden. It has an area of 44,745 sq km and a population of 496,639 residents. Vasa (Finnish: Vaasa) is the capital of the county.
Vasa County is a constituency in the elections to the house of commoners.
Governor of Vasa County is Esko Aho.