TS

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 (⟨t͡s⟩, ⟨t͜s⟩, or ⟨ʦ⟩), 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 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

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)

Other uses

 * Teaspoon (ts.), a measure in cooking
 * ISO Technical Specification, e.g. ISO/TS 16949:2009
 * TinySex, a slang term in sexual roleplay
 * Top Secret, a security classification
 * Transsexual, a person whose gender identity is inconsistent with their assigned sex
 * 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