IRT may refer to:
Science and technology
*
Imagery rehearsal therapy, a treatment for
nightmare disorders
*
Immunoreactive trypsinogen, newborn screening test for cystic fibrosis
*
Infrared thermography
* Infrared Telescope (IRT), carried on Space Shuttle mission
STS-51-F
*
Item response theory, to interpret psychometric tests
Television
* ''
Ice Road Truckers'', a reality television series
*
International Response Team, a fictional body in ''Criminal Minds''
Other uses
*
IR Tanger, a Moroccan association football club
*
Incident response team, a group of people who prepare for and respond to any emergency incident
*
Indiana Repertory Theatre, Indianapolis, US
*
Institut für Rundfunktechnik
The Institut für Rundfunktechnik 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 respon ...
, a German research institute for broadcasters
*
Interborough Rapid Transit Company, former New York City Subway operator
* ''
International Registry of Tartans
The Scottish Tartans Authority (STA) is a Scotland-based organisation dedicated to preserving and promoting knowledge of Scottish tartans and Highland dress. It was formed in 1996 by former members of the Scottish Tartans Society (STS). The orga ...
'', a textile database also known as ''TartanArt''
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