DCT

DCT may refer to:

Science and technology

 * DCT (videocassette format), a videocassette format developed by Ampex
 * Discovery Channel Telescope, former name of the Lowell Discovery Telescope, US
 * Dual-clutch transmission, a vehicle technology which allows gears to be selected in fully manual or automatic mode

Biology and medicine

 * Direct Coombs test, used to test for autoimmune hemolytic anemia
 * Distal convoluted tubule, a part of the functional unit of the kidney
 * Dopachrome tautomerase, a human gene

Mathematics

 * Discrete cosine transform, a mathematical transform related to the Fourier transform and widely used in digital data compression
 * Dominated convergence theorem, a central mathematical theorem in the theory of integration first proposed by Henri Lebesgue

Other uses

 * Death Come True, an 2020 adventure video game
 * Director Control Tower, a facility equipped to direct and control a ship's gun battery
 * Discourse-completion task, a pragmatics research method in linguistics
 * Dreams Come True (band), a Japanese band
 * Danescourt railway station (National Rail station code), Wales
 * Divine Command Theory, a moral theory which holds that divine revelation (especially by God) is the basis for morality