NAV or Nav may refer to:
Government agencies Norwegian Labour and Welfare Administration, Norwegian public welfare agency, the Norwegian abbreviation and common name is NAV. Nemzeti Adó- és Vámhivatal, Hungarian Tax and Customs agency, commonly referred to as NAV.
Medicine and biology Nav, voltage-gated sodium channels nerve-artery-vein (anatomy), when all these follow a common pathway Nomina Anatomica Veterinaria, veterinary textbook
Computers Network allocation vector, a method to avoid collisions in a shared transmission medium Norton AntiVirus, antivirus software developed by Symantec Corporation Microsoft Dynamics NAV, an enterprise resource planning software product from Microsoft
Finance Net asset value, a fund's price per share
Music Nav (rapper) (stylized as NAV), a Canadian rapper, singer, and record producer Nav (mixtape), his 2017 debut commercial mixtape
Places Nav, Afghanistan Nav, Iran (disambiguation) Nav (Slavic folklore), or Nawia, an underworld in Slavonic mythology
Transportation Nevşehir Kapadokya Airport, Nevşehir, Turkey, IATA airport code Navigation
Other uses Navajo language's ISO 639 code New Arabic Version, a translation of the Bible into Arabic Jav, Prav and Nav, three worlds in the Book of Veles