CT

CT or ct may refer to:

In arts and media[edit]

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, an American evangelical Christian magazine

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
Česká televize, 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

Centime (ct), the French for "cent", used in English in several Francophone countries
Stotinki (ст), the currency of Bulgaria

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

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

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

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 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 Texas A&M Corps of Cadets that is not in the band