TNS can stand for: Places Tungsten (Cantung) Airport, Tungsten, Northwest Territories, Canada Tao Nan School, a primary school in Singapore , the National Theatre of Strasbourg, France Groups The New Saints F.C., a Welsh football club, formerly Total Network Solutions F.C. Taylor Nelson Sofres, a market research company TechnoServe, a US-based international development non-profit group TNSrecords, a British punk rock/ska record label Transaction Network Services, a data communications company Triple Nine Society, a high IQ organisation The Naturist Society, a Naturist Network promoting Nude Recreation Other The Natural Step, a sustainability framework Transparent Network Substrate, an Oracle database technology Transcutaneous electrical nerve stimulation, also known as TENS