Vas is a frazione of Quero Vas and a former comune (municipality) in the province of Belluno in the Italian region of Veneto, located about northwest of Venice and about southwest of Belluno. As of 31 December 2004, it had a population of 909 and an area of .
The municipality of Vas contained the frazioni (subdivisions, mainly villages and hamlets) Marziai and Caorera.
Vas bordered the following municipalities: Feltre, Lentiai, Quero, Segusino, Valdobbiadene.
On 28 December 2013 Vas merged with Quero to form the new municipality of Quero Vas.