ATR may refer to:
Medicine
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Acute transfusion reaction
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Ataxia telangiectasia and Rad3 related, a protein involved in DNA damage repair
Science and mathematics
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Advanced Test Reactor, nuclear research reactor at the Idaho National Laboratory, US
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Attenuated total reflectance in infrared spectroscopy
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Advanced tongue root
In phonetics, advanced tongue root (ATR) and retracted tongue root (RTR) are contrasting states of the root of the tongue during the pronunciation of vowels in some languages, especially in Western and Eastern Africa, but also in Kazakh and ...
, a phonological feature in linguistics
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Atractyloside, a toxin and inhibitor of "ADP/ATP translocase"
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ATR0, an axiom system in
reverse mathematics
Technology
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Answer to reset, a message output by a contact Smart Card
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Automatic target recognition, recognition ability
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Autothermal reforming, a natural gas reforming technology
Transport
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ATR (aircraft manufacturer) an Italian-French aircraft manufacturer
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ATR 42
The ATR 42 is a regional airliner produced by Franco-Italian manufacturer ATR, with final assembly in Toulouse, France.
On 4 November 1981, the aircraft was launched with ATR, as a joint venture between French Aérospatiale (now Airbus) and ...
airliner
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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
Aeronautical Radio, Incorporated (ARINC), established in 1929, was a major provider of transport communications and systems engineering solutions for eight industries: aviation, airports, defense, government, healthcare, networks, security, and t ...
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Atmore (Amtrak station), Amtrak station code ATR
Music
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All That Remains (band), an American heavy metal band
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Atari Teenage Riot
Atari Teenage Riot (ATR) is a German band formed in Berlin in 1992. Highly political, they fuse left-wing, anarchist and anti-fascist views with punk vocals and a techno sound called digital hardcore, which is a term band member Alec Empire use ...
, a German techno band performing "digital hardcore" music
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''ATR'' (song), a song by ATR
Organisations
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Absent Teacher Reserve, of teachers in New York City
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Americans for Tax Reform
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Anglican Theological Review
The ''Anglican Theological Review'' is the "unofficial journal of the seminaries of the Episcopal Church in the United States and the Anglican Church of Canada." Issues include peer-reviewed articles, poetry submissions, and book reviews. The journ ...
Other
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African Traditional Religion
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ATR: All Terrain Racing, a video game
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ATR.1 certificate, in trade between EU and Turkey
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ATR (company) (''Auto-Teile-Ring''), Germany
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Average True Range, a market volatility indicator
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ATR (TV channel), a Crimean Tatar TV Channel in Ukraine
{{disambiguation