BAV

BAV or Bav may refer to:
 * Balloon Aortic valvuloplasty, a medical procedure
 * Bamboo Airways, a Vietnamese airline
 * Banna virus, Reoviridae family
 * Baotou Erliban Airport, China
 * Battle Athletes Victory, a Japanese anime based on Battle Athletes
 * Bavaria, a state of Germany
 * Bicuspid aortic valve, a congenital condition of the aortic valve
 * Bovine adenovirus, also called BAdV
 * Federal Office for Transport (Bundesanstalt für Verkehr, BAV), a government agency of Austria
 * Federal Office for Transport (Switzerland) (Bundesanstalt für Verkehr, BAV), a government agency of Switzerland
 * Vatican Library (Bibliotheca Apostolica Vaticana), the library of the Holy See, located in Vatican City