TS or Ts may refer to:

Businesses and organizations

* Air Transat (IATA code TS), a Canadian airline * Tenaris (NYSE symbol), a global manufacturer of steel pipe products * Theosophical Society, religious philosophy * Tidewater Southern Railway (reporting mark TS), a former US railroad * Trabzonspor, a Turkish Football Club * Transcendental Students, a former radical student group at NYU * TS Ferries, an Estonian ferry line

Linguistics

* Ts (digraph), a digraph in the Latin alphabet * Voiceless alveolar sibilant affricate (, , or ), a type of consonantal sound ** Tse (Cyrillic) (Ц ц), the Cyrillic letter representing the voiceless alveolar affricate * Tsonga language (ISO 639 code: ts), of southern Africa

Science and technology

* Tensile strength, in materials science

Biology and medicine

* Transverse plane, Transverse section, a term used in microscopy when prepared slide has a sample transversely dissected. * Thymidylate synthase, the enzyme used to generate thymidine monophosphate * Tourette syndrome, a neurological condition involving involuntary tics * Turner syndrome, a condition in which a female is partly or completely missing an X chromosome

Chemistry

* Tennessine, symbol Ts, a chemical element * Tosyl, a group in organic chemistry * Transition state, of a chemical reaction

Electronics and computing

* Adobe Technical Communication Suite, an Adobe software family * MPEG transport stream (file extension .ts), a digital media container format * Telesync, a bootleg recording of a film recorded in a movie theater * Terminal Services, a component of Microsoft Windows operating systems * Tip-Sleeve, a standard monaural phone connector (audio), phone connector * TypeScript (file extension .ts), a Microsoft programming language

Mathematics

* Tabu search, a search method * Tate–Shafarevich group, in arithmetic geometry

Transportation

* Twin Spark, an Alfa Romeo car engine technology * Turbine Steamship (ship prefix#Generic (merchant navy) prefixes, ship prefix) * Turn and slip indicator, an avionics instrument * Training Ship (ship prefix#Generic (merchant navy) prefixes, ship prefix) * Telangana State (vehicle registration code TS), India * Tunisia (aircraft registration prefix TS)

Other uses

* Teaspoon (ts.), a measure in cooking * ISO technical specification#Standardization process, ISO Technical Specification, e.g. ISO/TS 16949:2009 * Top Secret, a security classification * TeamSpeak, a proprietary voice-over-Internet Protocol application for audio communication *TS postcode area, UK *Transition School, a one-year program at the University of Washington; see Transition School and Early Entrance Program