TDC

• Hong Kong Trade Development Council
• Taiwan Design Center, an art organization based in Taipei, Taiwan
• TDC A/S, a Danish telecommunications company
• Teradata Corporation (U.S. ticker symbol)
• Texas Department of Criminal Justice, formerly the Texas Department of Corrections
• Type Directors Club, an international organization specialising in typography
• Theta Delta Chi, a social fraternity founded at Union College, New York, US
• The Discovery Channel, former name of Discovery Channel

• Tristan da Cunha, both a remote group of volcanic islands in the south Atlantic Ocean and the main island of that group
• Tokyo Dome City, an entertainment complex in Tokyo, Japan
• Toronto-Dominion Centre, a cluster of buildings in Toronto, Ontario, Canada

• Time-to-digital converter, a device in signal processing
• Top dead center, the position farthest from the crankshaft of a piston in a reciprocating engine, see Dead centre (engineering)
• Torpedo Data Computer, a piece of naval technology

• Total delivery cost, the amount of money it takes for a company to manufacture and deliver a product
• Trophée des Champions, a French association football trophy
• The Death Cure, a science fiction novel by American writer James Dashner
• Trainee Detective Constable, the most junior British police Criminal Investigation Department (CID) rank; See Police ranks of the United Kingdom

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