Companies, organizations and schools:

• Toronto Transit Commission, a public transit operator in Toronto, Ontario, Canada
• Teachers Training College is a famous combined primary & secondary school in Yangon, Myanmar. The name was later changed to Practising School, Institute of Education
• Telecom Technology Center, a telecommunication testing laboratory and consultant organisation in Taiwan
• Telecommunication Technology Committee, a telecommunications standards body in Japan
• Telford Town Centre, an area of central Telford, England.
• Tendring Technology College, a secondary school in Essex, England.
• The Teaching Company, an American company that produces recordings of lectures by university professors
• Trans-Texas Corridor, an American transportation network of expressways, rails, and utility lines being constructed in Texas
• Transmission Technologies Corporation, a manufacturer of automobile transmissions
• Trend Technology Center, Trend Controls distributors of intelligent building solutions.
• Trident Technical College, a two-year public college in greater Charleston, South Carolina
• Tulsa Technology Center, a public college in Tulsa, Oklahoma
• TreeTrunkCash, a website that's been running since 2004
• ToonTown Central, a forum fansite for the popular Disney Online game Toontown.
• Transportation Technology Center, a US govrenment rail transportation testing facility located in Pueblo, Colorado

In economics:

• Time to customer

In arts and culture:

• T.T.C., was a soccer team in the Canadian National Soccer League and played in 1932
• TTC (band), a French hip-hop trio
• The Tennis Channel, a digital channel devoted to tennis

In computing:

• TrueType Collection, a file type that packs several TrueType fonts into a single file

TTC may also refer to:

• Phenylalanine, encoded by the cDNA triplet codon 'TTC' in the standard eukaryotic genetic code
• Terrorist Training Camp, in NATO documents
• Tetrazolium chloride, a redox indicator commonly used in biochemical experiments especially to indicate cellular respiration
• Threshold of Toxicological Concern the concentration of a chemical so low that there is no toxic risk associated with its presence.
• Trying To Conceive, a term used for people who are trying to conceive a child; see infertility
• TrueType Collection, a version of TrueType font that incorporates multiple fonts into a single file
• Two-Task Common, the "wire protocol" used by the Oracle RDBMS

References