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 Terasecond, symbol Ts, =1012 seconds
Biology and medicine 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 TypeScript (file extension .ts), a Microsoft programming language
Mathematics Tabu search, a search method Tate–Shafarevich group, in arithmetic geometry Transition system, a directed graph model
Transportation Twin Spark, an Alfa Romeo car engine technology Turbine Steamship (ship prefix) Turn and slip indicator, an avionics instrument Training Ship (ship prefix) Telangana State (vehicle registration code TS), India Tunisia (aircraft registration prefix TS) Tobu Skytree Line, Kameido Line, and Daishi Line (railway line prefix TS)
Other uses Teaspoon (ts.), a measure in cooking 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
See also T&S (disambiguation) Models of Ibanez Tube Screamer guitar overdrive pedal, e.g. TS7