AAZ or Aaz may refer to:
Quetzaltenango Airport in Quetzaltenango Department, Guatemala (IATA airport code AAZ) Amarasi language, a Malayo-Polynesian language of Indonesia 1.9 R4 TD 55kW, a discontinued automobile engine; see the list of discontinued Volkswagen Group diesel engines Zalsupindole, a nonhallucinogenic psychoplastogen