TNC, tnc, or TnC may refer to:
Computers Triangular network coding, a packet coding scheme Trusted Network Connect, an open architecture for computer network access control
Education Trevecca Nazarene College, now called Trevecca Nazarene University, Nashville, Tennessee, U.S. Turkmen National Conservatory, a music conservatory in Ashgabat, Turkmenistan
Science and medicine Tenascin C or TN-C, a protein encoded by the TNC gene Thymic nurse cells
Arts, entertainment, and media Teatre Nacional de Catalunya, a public theatre in Barcelona, Catalonia, Spain National Theatre Craiova, a public theatre in Craiova, Romania Television Nishinippon Corporation, a TV station in Fukuoka, Japan Telenovela Channel, a telenovela-based cable channel in the Philippines The New Criterion, a monthly literary magazine based in New York City, New York, U.S. Theater for the New City, New York City, New York, U.S.
Other uses Terminal node controller, a device used by amateur radio operators The Nature Conservancy, an environmental organization headquartered in Arlington, Virginia, U.S. The Negotiation Challenge, an annual international negotiation competition TNC connector, a type of coaxial cable connector Toronto Neighbourhood Centres Transnational corporation, corporations that identify with more than one country Transportation network company, a legal term for a ridesharing company in certain jurisdictions Tripartite Naval Commission, a 1945 naval commission formed to allocate seized German ships and submarines Tanimuca-Retuarã language, an ISO 639-3 language code Team and Concepts (TnC), a Hong Kong–based company that produced the online spreadsheet EditGrid Terms and conditions (T&C)