BAF or Baf may refer to:
Biology Barrier-to-autointegration factor, a family of proteins BRG1, or hbrm-associated factors, a family of proteins; see SWI/SNF re BAF complex
Military Bagram Airfield Balkan Air Force, a late-World War II Allied air formation Bangladesh Air Force Belgian Air Force, previous name of the Belgian Air Component, ICAO code Benefield Anechoic Facility, installed systems for avionics test programs Belarusian Air Force Bolivian Air Force Bophuthatswana Air Force, the aviation branch of the military forces of Bophuthatswana British Armed Forces, the military of the United Kingdom of Great Britain and Northern Ireland Bulgarian Air Force
Other uses Baca language (ISO 639:b), a Southern Bantoid language of Cameroon .baf, a proprietary data format used by Bruker mass spectrometers Baptistina family, an asteroid family Barnes Municipal Airport, IATA airport code Basal area factor, used in forestry to calculate tree cover over land Belarus Athletic Federation Berliner Animation Film, former film and TV production company (1999–2015) Bio aviation fuel, another term for aviation biofuel Brigade d'autodéfense du français (BAF), an activist grouping in Quebec in defense of French language British Academy of Fencing British Air Ferries, a former airline Building a Future, an organization concerned with child poverty in Latin America Bunker adjustment factor, sea freight charges which represents additions due to oil prices The Turkish name for Paphos, Cyprus