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
  • 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)