CRT

CRT or Crt may refer to:

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

Mathematics and technology

• Cathode-ray tube, a display
• Chinese remainder theorem in number theory
• Microsoft C Run-Time library
• SecureCRT, 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, 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, transport company in Australia
• Chicago Rapid Transit Company, former rail company

Other uses

• Canadian Railway Troops, WWI
• Charitable remainder trust
• Claiming Rule Teams, in motorcycle racing
• Columbia River Treaty, Canada-US, 1960s
• Connecticut Repertory Theatre, University of Connecticut
• Correctional Emergency Response Team
• An abbreviation for Crater (constellation)
• Iyojwaʼja Chorote, a language in Salta province, Argentina, ISO 639 code