CT or ct may refer to:
In arts and media c't (Computer Technik), a German computer magazine Carrick Times, Northern Irish newspaper Freelancer Agent Connecticut (C.T.), a fictional character in the web series Red vs. Blue Christianity Today, an American evangelical Christian magazine
Businesses and organizations CT Corp, an Indonesian conglomerate CT Corporation, an umbrella brand for two businesses: CT Corporation and CT Liena C/T Group, formerly Crosby Textor Group, social research and political polling company Canadian Tire, a Canadian company engaged in retailing, financial services and petroleum Calgary Transit, the public transit service in Calgary, Alberta, Canada Central Trains (National Rail abbreviation), a former train operating company in the United Kingdom Czech Television, the public television broadcaster in the Czech Republic Community Transit, the public transit service in Snohomish County, Washington, U.S. Comunión Tradicionalista, a former Spanish political party CT (TV channel), a Filipino cable and satellite television network
Finance Centime (ct), the French for "cent", used in English in several Francophone countries Stotinki (ст), the currency of Bulgaria
Places CT postcode area, for Canterbury and surrounding areas in south-eastern England Connecticut (United States postal abbreviation)
Province of Catania (vehicle registration code), Sicily, Italy
Central African Republic (FIPS Pub 10-4 code and obsolete NATO diagram) Canton and Enderbury Islands (obsolete ISO 3166 country code), part of the Phoenix Islands in the Pacific Ocean Cape Town (capital city of the Western Cape, South Africa)
Ct, for "Court"; a street suffix as used in the US
Science and technology Biology and medicine Haplogroup CT, Y-DNA haplogroup. CT scan or X-ray computed tomography, a medical imaging method Calcitonin (symbol CT), a hormone produced in the thyroid gland Calibrated automated thrombogram (CT or CAT), a coagulation test Cardiothoracic surgery, the field of medicine specializing in chest surgery Chemotype (ct.), a chemically distinct entity in a plant or microorganism Cognitive therapy, a type of psychotherapy Connective tissue, a type of biological tissue Chelation therapy Chemotherapy Cholera toxin, a toxic protein secreted by Vibrio cholerae Threshold Cycle (Ct), see cycle of quantification/qualification COVID-19 test
Computing Intel Ct, a SIMD multithreading programming model developed by Intel Certificate Transparency, in network security
Other uses in science and technology CT Value, in drinking water disinfection Threshold cycle (Ct), a measure in the cycle of quantification/qualification of a real-time polymerase chain reaction Carat (purity) (ct), a measure of the purity of gold and platinum alloys Carat (mass) (ct), a unit of mass used for measuring gems and pearls Continuous-time signal, a varying quantity (a signal) whose domain is a continuum Center tap, a wire that is connected halfway along one of the windings of a transformer, inductor or a resistor Compliant Tower, a deepwater offshore oil platform Convective temperature, in atmospheric science Current transformer, a kind of transformer used in the electrical power industry Contraterrene, an obsolete word describing antimatter
Transportation Lexus CT, an automobile Honda CT series, a series of Honda bikes Crawler-transporter, a tracked vehicle used to transport the Space Shuttle from Vehicle Assembly Building to Launch Complex 39 Civil Air Transport (IATA code) Training cruiser, a U.S. Navy hull classification Cybertruck
Other uses Ct, a typographic ligature c. t. (cum tempore, Latin for "with time"), indicates that a lecture will begin a quarter-hour after the stated time; see Academic quarter Central Time Zone, a time zone in Canada, the United States, and Mexico Coffin Texts Conspiracy theory or theorist Counter-terrorism Cryptologic technician, a United States Navy enlisted rating or job specialty Chinese Taipei, the name used by Taiwan in some international organizations due to political pressure from the People's Republic of China ct following a number means the number of items contained in a package (e.g. zucchini 3 ct); abbreviation of 'count' Corps Turd, etymologically "Cadet in Training", member of the Texas A&M Corps of Cadets that is not in the band
See also Champions Trophy (disambiguation), several trophies awarded in different sports Central tendon (disambiguation)