CT or ct may refer to:

In arts and media

* '' c't'' (''Computer Technik''), a German computer magazine * Freelancer Agent Connecticut (C.T.), a fictional character in the web series ''Red vs. Blue'' *

Christianity Today ''Christianity Today'' is an evangelical Christian media magazine founded in 1956 by Billy Graham. It is published by Christianity Today International based in Carol Stream, Illinois. ''The Washington Post'' calls ''Christianity Today'' "evange ...

, an American evangelical Christian magazine

Businesses and organizations

* CT Corp, an Indonesian conglomerate *

CT Corporation CT, or the Corporation Trust Company, is a wholly owned subsidiary of Wolters Kluwer, a multi-national information services company based in the Netherlands with operations in more than 35 countries. CT Corporation is the largest registered age ...

, 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 Canadian Tire Corporation, Limited is a Canadian retail company which operates in the automotive, hardware, sports, leisure and housewares sectors. Its Canadian operations include: Canadian Tire (including Canadian Tire Petroleum gas stations a ...

, 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 * Česká televize, the public television broadcaster in the Czech Republic * Community Transit, the public transit service in Snohomish County, Washington, U.S. *

Comunión Tradicionalista The Traditionalist Communion ( es, Comunión Tradicionalista, CT) was one of the names adopted by the Carlist movement as a political force since 1869. History In October 1931, Carlist claimant to the Spanish throne Duke Jaime died. He was s ...

, a former Spanish political party *

CT (TV channel) CT (stood for City Television) was a 24-hour Filipino cable and satellite television network based in Mandaluyong. It was launched on March 22, 2015. Owned by Solar Entertainment Corporation, replacing Jack City, a defunct spin-off of sister chan ...

, 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 (C_t), 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 (C_t), 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

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

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 (class timing), 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 followed by a number means the number of items contained in a cardboard (e.g. zucchini 3 ct) * Corps Turd, etymologically "Cadet in Training", member of the Glossary of Texas A&M University terms#C, Texas A&M Corps of Cadets that is not in the band