TDC
- Dead centre (engineering)
- Discovery Channel
- Hong Kong Trade Development Council
- Police ranks of the United Kingdom
- TDC A/S
- Taiwan Design Center
- Teradata Corporation
- Texas Department of Criminal Justice
- The Death Cure
- Theta Delta Chi
- Time-to-digital converter
- Tokyo Dome City
- Toronto-Dominion Centre
- Torpedo Data Computer
- Total delivery cost
- Tristan da Cunha
- Trophée des Champions
- Type Directors Club