IRT may refer to:

Organisations

Indiana Repertory Theatre Indiana Repertory Theatre, frequently abbreviated IRT, is a professional regional theatre in Indianapolis, Indiana that began as a genuine repertory theatre with its casts performing in multiple shows at once. It has subsequently become a Regiona ...

, an American company of actors *

Institut für Rundfunktechnik The GmbH (IRT) (''Institute for Broadcasting Technology Ltd.'') was a research centre of German broadcasters ( ARD / ZDF / DLR), Austria's broadcaster ( ORF) and the Swiss public broadcaster ( SRG / SSR). It was responsible for research on broa ...

, a German research institute for broadcasters *

Interborough Rapid Transit Company The Interborough Rapid Transit Company (IRT) was the private operator of New York City's original underground subway line that opened in 1904, as well as earlier elevated railways and additional rapid transit lines in New York City. The IRT ...

, a defunct New York subway operator

Science and technology

* Imagery Rehearsal Therapy, see *

Immunoreactive trypsinogen Measurement of immunoreactive trypsinogen (IRT) in blood of newborn babies is an assay in rapidly increasing use as a screening test for cystic fibrosis Cystic fibrosis (CF) is a genetic disorder inherited in an autosomal recessive manner that ...

, newborn screening test for cystic fibrosis *

Infrared thermography Infrared thermography (IRT), thermal video or thermal imaging, is a process where a thermal camera captures and creates an image of an object by using infrared radiation emitted from the object in a process, which are examples of infrared im ...

* Infrared Telescope, on the

STS-51-F STS-51-F (also known as Spacelab 2) was the 19th flight of NASA's Space Shuttle program and the eighth flight of Space Shuttle ''Challenger''. It launched from Kennedy Space Center, Florida, on July 29, 1985, and landed eight days later on Au ...

Space Shuttle mission *

Item response theory In psychometrics, item response theory (IRT, also known as latent trait theory, strong true score theory, or modern mental test theory) is a paradigm for the design, analysis, and scoring of Test (student assessment), tests, questionnaires, and sim ...

, to interpret psychometric tests

Television

* ''

Ice Road Truckers ''Ice Road Truckers'' (commercially abbreviated ''IRT'') is a reality television series that aired on History Channel from 2007 to 2017. It featured the activities of drivers who operated trucks on ice roads crossing frozen lakes and rivers, i ...

'', a reality television series *

International Response Team ''Criminal Minds: Beyond Borders'' is an American police procedural television series created by Erica Messer that aired on CBS from March 16, 2016, to May 17, 2017. Produced by The Mark Gordon Company in association with CBS Television Studi ...

, a fictional body in ''Criminal Minds''

Other uses

IR Tanger Ittihad Riadi Tanger (; ), often shortened to IR Tanger or the abbreviation IRT, is a Moroccan football club based in Tangier, that competes in Botola, Morocco's top professional football league. The club was founded in 1936 as Unión Deportiv ...

, a Moroccan association football club * Incident response team, a group of people who respond to an emergency * ''International Registry of Tartans'', a Scottish Tartans Authority textile database {{disambig