CRT
# CRT

CRT or Crt may refer to:

## Law

* Charitable remainder trust, United States
* Civil Resolution Tribunal, Canada
* Columbia River Treaty, Canada–US, 1960s

## Science, technology, and mathematics

### Medicine and biology

* Calreticulin, 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, chemo- and radiotherapy combined
* Cognitive Retention Therapy, for dementia
* Corneal Refractive Therapy, in optometrics
* CRT (genetics), a gene cluster

### Social sciences

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

### Technology

* Cathode-ray tube, a display
* Microsoft C Run-Time library
* SecureCRT, formerly CRT, a telnet client
* .crt, X.509 Certificate filename extension

### Other uses in science and mathematics

* Chinese remainder theorem, in number theory
* Crater (constellation), in astronomy (abbreviated Crt)

## Transport

* Canal & River Trust, England and Wales
* Changchun Rail Transit, China
* Chongqing Rail Transit, China
* Connecticut River Transit, a defunct American bus service
* Cross River Tram, a defunct proposal in London, England
* CRT Group, an Australian transport company
* Chicago Rapid Transit Company, a defunct American rail company

## Other uses

* Canadian Railway Troops, WWI
* Claiming Rule Teams, in motorcycle racing
* Connecticut Repertory Theatre, University of Connecticut
* Correctional Emergency Response Team
* Iyojwaʼja Chorote, a language in Salta province, Argentina, ISO 639 code
