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AAV or Aav may refer to:

  • Allah Valley Airport (IATA airport code), in Allah Valley, Mindanao, Philippines
  • Anti-aircraft vehicle, or self-propelled anti-aircraft weapon
  • Amphibious Assault Vehicle or Assault Amphibious Vehicle, an amphibious tracked vehicle
  • Adeno-associated virus, a nonpathogenic virus used as a gene therapy tool
  • Advantage Oil & Gas Ltd., a Canadian oil and gas company
  • Armstrong Studios, an independent recording studio in Melbourne, Australia, later renamed AAV.
  • Aníbal Acevedo Vilá, former governor of Puerto Rico (2005-2008)
  • Air admittance valve, a valve in a drain-waste-vent system
  • Arab American Vehicles, a car assembler in Egypt
  • Austroasiatic languages, a language group of Southeast Asia
  • Aav (surname), Estonian surname
Aav (surname)

The surname Aav may refer to:

  • Evald Aav (1900–1939), Estonian composer
  • Herman Aav (1878-1961), Estonian Orthodox archbishop
  • Tõnu Aav (born 1939), Estonian stage and film actor