ATR
ATR may refer to:
Medicine
- Acute transfusion reaction
- Ataxia telangiectasia and Rad3 related, a protein involved in DNA damage repair
Science and mathematics
- Advanced Test Reactor, nuclear research reactor at the Idaho National Laboratory, US
- Attenuated total reflectance in infrared spectroscopy
- Advanced tongue root, a phonological feature in linguistics
- Atractyloside, a toxin and inhibitor of "ADP/ATP translocase"
- ATR0, an axiom system in reverse mathematics
Technology
- Answer to reset, a message output by a contact Smart Card
- Automatic target recognition, recognition ability
- Autothermal reforming, a natural gas reforming technology
Transport
- ATR (aircraft manufacturer) an Italian-French aircraft manufacturer
- ATR 42 airliner
- ATR 72 airliner
- IATA code for Atar International Airport
- Andaman Trunk Road
- Air Transport Rack, standards for plug-in electronic modules in aviation and elsewhere; various suppliers e.g. ARINC
- Atmore (Amtrak station), Amtrak station code ATR
Music
- All That Remains (band), an American heavy metal band
- Atari Teenage Riot, a German techno band performing "digital hardcore" music
- ATR (song), a song by ATR
Organisations
- Absent Teacher Reserve, of teachers in New York City
- Americans for Tax Reform
- Anglican Theological Review
Other
- African Traditional Religion
- A US Navy hull classification symbol: Rescue tug (ATR)
- ATR: All Terrain Racing, a video game
- ATR.1 certificate, in trade between the European Union and Turkey
- ATR (company) (Auto-Teile-Ring), Germany
- Average True Range, a market volatility indicator
- ATR (TV channel), a Crimean Tatar television channel in Ukraine
Topics referred to by the same term
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