TSS

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
 * TV Shinhiroshima, 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

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