Vas or VAS may refer to:
Places
- Vas County, a county in Hungary
- Vas County (former), a former county of the Kingdom of Hungary
- Vas, Kostel, a village in Slovenia
- Vas, Veneto, a frazione of Quero Vas, Italy
People
- Surname
- Abdul Vas (born 1981), Venezuelan artist
- Anukreethy Vas (born 1998), Indian model and beauty pageant winner
- Imre Vas (born 1966), Hungarian jurist and politician
- János Vas (born 1984), Hungarian ice hockey player
- Joseph Vas (born 1955), American politician
- Márton Vas (born 1980), Hungarian ice hockey player
- Robert Vas (1931–1978), Hungarian film director
- Given name
- Vas Blackwood (born 1962), British actor
- Vas J Morgan (born 1988), English television personality
- Vas Nuñez (born 1995), Hong Kong footballer
Science and medicine
- Vas (moth), a genus of moths in the family Erebidae
- Vas deferens, connecting the left and right epididymis to the ejaculatory ducts in male anatomy
- Vaccine-associated sarcoma, a type of malignant tumor found in cats
- Victoria Archaeological Survey, a government organisation in Victoria, Australia
- Visual analogue scale, a psychometric response scale
Technology
- Vector addition system, a mathematical modeling language
- Vehicle-activated sign
- Virtual address space
Other uses
- Vas (band), a musical group
- Left Alliance (Finland) (Finnish: Vasemmistoliitto), a political party in Finland
- Value-added service, a telecommunications industry concept
- Victory at Sea, a 1952 documentary television series
- Victory at Sea (game), a set of naval wargames rules
- Visual Arts Scotland