TNS can stand for:

  • Taylor Nelson Sofres, a market research company
  • Tao Nan School, a primary school in Singapore
  • Taran Noah Smith, an American actor
  • Temporal noise shaping, an audio encoding technique
  • The Natural Step, a sustainability framework
  • The Naturist Society, a national naturist organization based in Oshkosh, Wisconsin, USA
  • The New Saints F.C., a Welsh football (soccer) club formerly sponsored by Total Network Solutions that bore the company's name from 1997 to 2006
  • TNS (gene), a protein tyrosine phosphatase
  • TNSrecords, a Manchester, U.K. based Punk Rock/Ska Record Label
  • Transparent Network Substrate, used by Oracle database software for network communications.
  • Triple Nine Society, a high IQ organisation, similar to Mensa
  • Tungsten (Cantung) Airport, Tungsten, Northwest Territories, Canada