AF

AF, af, Af, etc. may refer to:

Arts and entertainment

 * A-F Records, Pittsburgh, Pennsylvania
 * Almost Family, US TV series

European

 * ÅF, a Swedish technical consulting company
 * AF Gruppen, a construction company, Norway
 * Action Française, a French political movement
 * Air France, IATA code and stock symbol
 * Anarchist Federation (British Isles)

International

 * Abercrombie & Fitch, A&F, US clothing shops
 * The Adaptation Fund, for climate change adaptation, UN
 * Adventist Forums, of Seventh-day Adventists

Elsewhere

 * American Freightways, US trucking company, merged into FedEx Freight

Language

 * Académie française, for French language matters
 * Alliance Française, promoting French language and culture


 * Acronym Finder, an online database


 * Afrikaans language (ISO 639-1 language code AF)
 * "...as fuck", meaning "very", in SMS language

Medicine

 * Amniotic fluid
 * Atrial fibrillation, an abnormal heart rhythm

Military

 * AF Guardian, a US Navy warplane
 * Air force
 * Armed forces
 * A US Navy hull classification symbol: Provisions store ship (AF)

Places

 * Afghanistan, by 2-letter ISO, FIPS 10-4, LOC MARC and obsolete NATO country code
 * .af, the top-level Internet domain for Afghanistan
 * Agra Fort railway station, Rawatpara, India

Acoustics and communications

 * Amplify-and-Forward, a scheme of relay channel
 * Alternative frequency
 * Audio frequency

Units of measure

 * Acre-feet
 * Attofarad

Visual arts

 * Autofocus, of a camera
 * Anisotropic filtering

Other uses in science and technology

 * Af, the Köppen climate classification for a tropical rainforest climate
 * Across flats (A/F), a measure of hexagonal nut flat size
 * Advanced Format, large hard disk sectors
 * Anaerobic filter, a type of anaerobic digester
 * Arcuate fasciculus, a nerve bundle in the brain

Other uses

 * Alabama and Florida Railway (reporting mark AF)
 * Anno Fascista, a year in the Italian Fascist calendar