Telecommunication Technology Committee 
Telecommunications Technology Committe… 
Time To Circularize 
Technical Training Center 
Telecommunications Techniques Corporat… 
Telecommunications Technology Council 
Telemetry Traffic Control 
Telemetry, Tracking and Command 
Test transfer cask 
Transportation Technical Committee 
Transportation Technology Center 
Trying to Conceive 
Technology Transfer Center 
Telemetry, Telecommand and Control 
Terminating Toll Center 
Time-To-Collection 
Toronto Transit Commission 
Transmit Timing Controller 
Tunnel Thermal Control 
Tactical Telephone Central 
Tactical Training Center 
Tape Transport Cartridges 
Tape-to-Card 
Tasmanian Tourist Council 
Tavistock Town Council 
Teacher Training College 
Teachers Training College 
Teacher's Training Course 
Technical Training Command 
Technical Transfer Council