CT

CT or ct may stand for:

Carat (purity) (ct), a measure of the purity of gold and platinum alloys
Cardiothoracic Surgery, the field of medicine specializing in chest surgery
Center tap, a wire that is connected halfway along one of the windings of a transformer, inductor or a resistor
Centime (ct), French for "cent", used in English in several Francophone countries
Central Time zone, a time zone in Canada, the United States, and Mexico
Champions Trophy
Civil Air Transport IATA code
Chrono Trigger, a console role-playing game created by Square for the Super NES
Combustion turbine, a rotary engine that extracts energy from a flow of combustion gas
Computed tomography, a.k.a. CAT scan, a medical imaging method
Counter-terrorism, the practices, tactics, and strategies used by governments and militaries to fight terrorism
Cryptologic technician, a United States Navy enlisted rating or job specialty
c't, a German computer magazine
Cameltoe, a slang term for the outline of a woman's vulva when seen through tight clothing
Transparency (optics) (see-through)
Cryme Tyme, a professional wrestling stable working for WWE's Extreme Championship Wrestling brand
Computed tomography, the shortened medical acronym for Computed Tomography.

Organizations:

Calgary Transit, the public transit service in Calgary, Alberta, Canada
Central Trains, a train operating company in the United Kingdom
Česká televize (ČT), the public television broadcaster in the Czech Republic
Combined Transport Inc., a heavy haul trucking service based out of Central Point, Oregon, United States
CT, the largest registered agent firm in the world.

Places:

Canton and Enderbury Islands (via obsolete ISO 3166 country code), part of the Phoenix Islands in the Pacific Ocean
Cape Town, the legislative capital of South Africa
Catania, the capital city of the province of Catania, in Sicily, Italy
Central African Republic (via FIPS Pub 10-4 code and obsolete NATO digram)
Connecticut, via United States postal abbreviation