TAF may refer to:
- Tactical air force, a formation of the air forces of the British Commonwealth during and after World War II:
- Australian First Tactical Air Force - South West Pacific Area
- Desert Air Force (later known as the First Tactical Air Force) - North Africa and later Italy
- RAF Second Tactical Air Force - Northern Europe
- RAF Third Tactical Air Force - South Asia
- River Taf, in South Wales, UK
- Northwest African Tactical Air Force
- TAF Linhas Aéreas, a Brazilian airline
- Taiwanese American Foundation, an organization working in the Taiwanese immigrant community of the US
- Tav/Taf/Taph/Taw, the final letter of many Semitic abjads
- TBP-associated factors, a term used in genetics
- Test automation framework, in computer Software testing
- Terminal aerodrome forecast, format for reporting weather forecast information in aviation
- Tenofovir alafenamide fumarate, a drug use in the treatment of HIV infection
- Term Auction Facility, an instrument of monetary policy introduced in US financial markets
- Terminal Aerodrome Forecast, an encoded format for weather reports
- The American Friend, 1977 film
- The Athlete's Foot, a retail supplier of shoes and other sports apparel
- Tiger Athletic Foundation, private, non-profit corporation supporting Louisiana State University and its athletics program
- Tokyo International Anime Fair, an anime trade fair held annually in Japan
- Trade Association Forum, an umbrella group for trade organisations in the UK
- Treno ad alta frequentazione, an Italian railway vehicle
- Trim and Fit, a former school anti-obesity program in Singapore
- Tunisian Armed Forces
- Tunisian Air Force
- Turkish Air Force