TTC may refer to:

Arts and entertainment Tao Te Ching, the collection of sayings attributed to Lao Tzu

TTC (band), a French hip-hop trio

Businesses and organizations Toronto Transit Commission, a public transit operator in Toronto, Ontario, Canada The Teaching Company, an American company that produces recordings of lectures by university professors The Tetris Company, owner of the trademark and copyright for Tetris Telecommunication Technology Committee, a telecommunications standards body in Japan Trade and Technology Council, a diplomatic forum for EU-US trade and tech Transmission Technologies Corporation, former name of automobile transmissions manufacturer TREMEC Corporation Tuvalu Telecommunications Corporation, telecommunications company in Tuvalu

Schools Tatung Institute of Commerce and Technology, a college in Chiayi City, Taiwan Tendring Technology College, a secondary school in Essex, England Trident Technical College, a public college in South Carolina, US Trinity Theological College (disambiguation) Tulsa Technology Center, a public college in Oklahoma, US TTC Yangon (Teacher's Training College), a school in Yangon, Myanmar Texas Technological College, former name of Texas Tech University, US

Places Transbay Transit Center, an intermodal transit station in San Francisco Trenton Transit Center, a train station in Trenton, New Jersey Transportation and Ticket Center, a transport hub at the Walt Disney World Resort Trans-Texas Corridor, an American transportation network of expressways, rails, and utility lines being constructed in Texas Trans Thane Creek, a creek running between Thane and Navi Mumbai, India Telford Town Centre, an area of central Telford, England, officially known Telford Shopping Centre Transportation Technology Center, a federal rail testing facility in Pueblo, Colorado

Science and technology General time- and transfer constant analysis, in electronic circuits Test-time compute, in machine learning Tetrazolium chloride, a redox indicator commonly used in biochemical experiments Threshold of Toxicological Concern, in toxicology Top trading cycle, an algorithm for trading Toyota TTC (Toyota Total Clean system), an emission control technology used by Toyota during the 1970s TrueType Collection, a file type packing several TrueType fonts Tracking, telemetry, and control, a subsystem of spacecraft and ground segments TTC, a codon for the amino acid phenylalanine

Other uses Cugir Tokarov, a Romanian variant of the Soviet TT-33 pistol