AF, af, Af, etc. may refer to:
Arts and media Autofocus, of a camera A-F Records, Pittsburgh, Pennsylvania Almost Family, US TV series America First with Nicholas J. Fuentes, a political commentary show hosted by Nick Fuentes that started in 2017
Places, transportation, and military Afghanistan, by 2-letter ISO, FIPS 10-4, LOC MARC and obsolete NATO country code Agra Fort railway station, Rawatpara, India Alabama and Florida Railway (reporting mark AF) American Freightways, US trucking company, merged into FedEx Freight Air France, IATA code and stock symbol AF Guardian, a US Navy warplane A US Navy hull classification symbol: Provisions store ship (AF) Air force Armed forces
Biology, ecology, and politics Amniotic fluid Atrial fibrillation, an abnormal heart rhythm Arcuate fasciculus, a nerve bundle in the brain Anaerobic filter, a type of anaerobic digester Af, the Köppen climate classification for a tropical rainforest climate The Adaptation Fund, for climate change adaptation, UN Action Française, a French political movement Anarchist Federation (British Isles) America First, a political slogan Anno Fascista, a year in the Italian Fascist calendar
Language, telecommunications, and computing Alliance Française, promoting French language and culture Académie française, for French language matters Afrikaans language (ISO 639-1 language code AF) Acronym Finder, an online database "...as fuck", meaning "very", in SMS language Amplify-and-Forward, a scheme of relay channel Alternative frequency Audio frequency .af, the top-level Internet domain for Afghanistan Anisotropic filtering Advanced Format, large hard disk sectors
Engineering and industry ÅF, a Swedish technical consulting company AF Gruppen, a construction company, Norway Across flats (A/F), a measure of hexagonal nut flat size
Other uses Abercrombie & Fitch, A&F, US clothing shops Adventist Forums, of Seventh-day Adventists Af, a Swedish nobiliary particle used in surnames Acre-feet Attofarad