CRT or Crt may refer to:

Science, technology, and mathematics

Medicine and biology

Calreticulin Calreticulin also known as calregulin, CRP55, CaBP3, calsequestrin-like protein, and endoplasmic reticulum resident protein 60 (ERp60) is a protein that in humans is encoded by the ''CALR'' gene. Calreticulin is a multifunctional soluble prote ...

, a protein * Capillary refill time, for blood to refill capillaries * Cardiac resynchronization therapy and CRT defibrillator (CRT-D) * Catheter-related thrombosis, the development of a blood clot related to long-term use of central venous catheters * Certified Respiratory Therapist *

Chemoradiotherapy Chemoradiotherapy (CRT, CRTx, CT-RT) is the combination of chemotherapy and radiotherapy to treat cancer. Synonyms include radiochemotherapy (RCT, RCTx, RT-CT) and chemoradiation. It is a type of multimodal cancer therapy. Chemoradiation can b ...

, chemo- and radiotherapy combined *

Cognitive Retention Therapy Cognitive Retention Therapy (CRT) also known as the Ashby Memory Method is a Cognitive therapy for dementia, based on the research of Dr. Mira Ashby. It is adapted from her programs for brain injury rehabilitation, for which she won the Order of ...

, for dementia * Corneal Refractive Therapy, in optometrics *

CRT (genetics) CRT is the gene cluster responsible for the biosynthesis of carotenoids. Those genes are found in eubacteria,Carotenoid biosynthetic pathway: molecular phylogenies and evolutionary behavior of crt genes in eubacteria. Phadwal K, Gene, 17 January 2 ...

, a gene cluster

Mathematics and technology

* Cathode-ray tube, a display * Chinese remainder theorem in number theory * Microsoft C Run-Time library *

SecureCRT SecureCRT is a commercial SSH and Telnet client and terminal emulator by VanDyke Software. Originally a Windows product, VanDyke later added a Mac OS X version in 2010 with release v6.6 and a Linux version in 2011 with release v6.7. History Sec ...

, formerly CRT, a telnet client * .crt, X.509 Certificate filename extension

Social sciences

* Cognitive reflection test, in psychology * Critical race theory, an academic framework of analysis * Current reality tree (theory of constraints), in process management

Transport

Canal & River Trust The Canal & River Trust (CRT), branded as in Wales, holds the guardianship of 2,000 miles of canals and rivers, together with reservoirs and a wide range of heritage buildings and structures, in England and Wales. Launched on 12 July 2012, the ...

, England and Wales * Changchun Rail Transit, China * Chongqing Rail Transit, China * Connecticut River Transit, former bus service in Vermont, US * Former Cross River Tram project, London *

CRT Group CRT Group is an intermodal transport company in Australia. It was founded in 1954 as Colin Rees Transport, a taxi truck company in Sydney. In 1981 it became known as the CRT Group, and by the time of its acquisition by QR National in June 2005 ...

, transport company in Australia *

Chicago Rapid Transit Company The Chicago Rapid Transit Company (CRT) was a privately owned firm providing rapid transit rail service in Chicago, Illinois and several adjacent communities between 1924 and 1947. The CRT is one of the predecessors of the Chicago Transit Autho ...

, former rail company

Other uses

Canadian Railway Troops The Corps of Canadian Railway Troops were part of the Canadian Expeditionary Force (CEF) during World War I. Although Canadian railway units had been arriving in France since August 1915, it was not until March 1917 that the units were placed under ...

, WWI * Charitable remainder trust * Claiming Rule Teams, in motorcycle racing *

Columbia River Treaty The Columbia River Treaty is a 1961 agreement between Canada and the United States on the development and operation of dams in the upper Columbia River basin for power and flood control benefits in both countries. Four dams were constructed under ...

, Canada-US, 1960s * Connecticut Repertory Theatre, University of Connecticut * Correctional Emergency Response Team * An abbreviation for

Crater (constellation) Crater is a small constellation in the southern celestial hemisphere. Its name is the latinization of the Greek '' krater'', a type of cup used to water down wine. One of the 48 constellations listed by the second-century astronomer Ptolemy, it de ...

* Iyojwaʼja Chorote, a language in Salta province, Argentina, ISO 639 code {{disambiguation