TSS may refer to:

Organizations

  • Tanglin Secondary School, a government secondary school in Clementi, Singapore
  • The Southport School, Anglican day and boarding school on Gold Coast, Queensland, Australia
  • Tinana State School, a public primary school in Maryborough, Queensland, Australia
  • Thornhill Secondary School, in Canada
  • Tideway Scullers School, a rowing club in London, England
  • Telangana Sports School, a sports school in Hyderabad, India
  • Times Square Stores, a US retail department store chain
  • Technical Services Staff, a component of the U.S. Central Intelligence Agency
  • Television Shin-Hiroshima, a TV station in Japan
  • Total System Services, Inc. (NYSE symbol)
  • Ton Steine Scherben, a German rock band

Retail

  • Times Square Stores, a defunct American department store also branded as "TSS"

Science and technology

  • Tiangong Space Station, a permanently crewed space station constructed by China.
  • Traffic Separation Scheme, a traffic-management route-system ruled by the International Maritime Organization
  • TSS-1, Tethered Satellite System-1, a 1990s joint space experiment program between Italy and USA flying a space tether
  • TSS-1R, reflight of the Tethered Satellite System mission
  • Tromsø Satellite Station, a satellite earth station located in Tromsø, Norway
  • Toxic shock syndrome, a potentially fatal illness caused by a bacterial toxin
  • Transcription start site, the starting point of the process of creating a complementary RNA copy of a sequence of DNA
  • TSS (operating system), an early time-sharing operating system on the IBM System/360 Model 67 and System/370
  • Task State Segment, a special structure on x86-based computers which holds information about a task
  • Total sum of squares, a quantity that appears as part of a standard way of presenting results
  • Total suspended solids, a water quality measurement
  • TATSU Signing Server, an Apple server which controls whether iOS versions can be restored to
  • Trusted Platform Module (TCG Software Stack), a software stack by TCG that allows interaction with a TPM
  • Texas Supernova Search, a program to search for new supernovae and other astronomical transients
  • Toyota Safety Sense, a collision avoidance system by Toyota
  • Thyristor Surge Suppressor, another name for a Thyristor Surge Protection Device (TSPD)

Transport

  • Tsing Shan Tsuen stop, Hong Kong (MTR station code TSS)
  • Trans Semanggi Suroboyo in Surabaya, Indonesia
  • Twin-screw steamer, a steam-powered vessel with two screw propellers