ST, St, or St. may refer to:

Arts and entertainment

  • Stanza, in poetry
  • Suicidal Tendencies, an American heavy metal/hardcore punk band
  • Star Trek, a science-fiction media franchise
  • Summa Theologica, a compendium of Catholic philosophy and theology by St. Thomas Aquinas
  • St or St., abbreviation of "State", especially in the name of a college or university (e.g. Penn St.)
  • "S.T. the Space Traveler", a 1990 episode of Alvin and the Chipmunks (1983)
  • Stranger Things, a Netflix sci-fi horror series

Businesses and organizations

Transportation

  • ST, the IATA airline designator for German airline Germania (airline)
  • ST, the railroad reporting mark for American railroad Springfield Terminal Railway (Vermont)
  • Sound Transit, a shortened form of Central Puget Sound Regional Transit Authority in the U.S. state of Washington
  • State Transport, a shortened form of Maharashtra State Road Transport Corporation of India
  • Suffolk Transit, a shortened form of Suffolk County Transit, the bus system serving Suffolk County, New York, U.S.
  • Stouffville line (ST), of the GO Transit rail network in Ontario, Canada
  • Sudan (aircraft registration prefix ST)

Other businesses and organizations

  • Statstjänstemannaförbundet, or Swedish Union of Civil Servants, a trade union
  • STMicroelectronics, a worldwide manufacturer of semiconductors
  • ST Engineering, a global technology, defense, and engineering group headquartered in Singapore

Geography

  • São Tomé and Príncipe (ISO 3166-1 country code ST)
  • .st, Internet country code top-level domain for São Tomé and Príncipe
  • Saxony-Anhalt, a state of Germany
  • Split, Croatia (vehicle plate code ST)
  • Stoke-on-Trent postcode area, United Kingdom
  • St or St., abbreviation of Saint
  • St or St., abbreviation of Street
  • St or St., abbreviation of Strait

Language and typography

  • , the ISO 639-1 language code for the Sesotho language
  • or , typographic ligatures
  • Standard Theory in generative grammar

Science and technology

Computing

  • ST connector, a type of optical fiber connector
  • Atari ST, a personal computer
  • Prefix of hard disk drives made by Seagate Technology, e.g. ST-506
  • Internet Stream Protocol, an experimental Internet protocol
  • Structured text, a high-level programming language that syntactically resembles Pascal and is designed for programmable logic controllers (PLC)
  • .st, the Internet country code top-level domain (ccTLD) for São Tomé and Príncipe

Mathematics

  • Standard part function, a term used in non-standard analysis

Physics

  • Stanton number St, used in physics
  • Strouhal number St, used in fluid mechanics
  • String theory

Units of measurement

  • Stokes (unit) (St), a CGS unit of kinematic viscosity
  • Stone (weight) (st.), a unit of mass used in the British Isles and other countries

Medicine

  • ST segment, the part of an electrocardiogram connecting the QRS complex and the T wave
  • Sulfotransferase, enzymes that catalyze the transfer of a sulfo group
  • Heat-stable enterotoxin, secretory peptides produced by some bacterial strains, such as enterotoxigenic Escherichia coli

Technology

  • Spherical tokamak, a type of fusion power device sometimes referred to as a spherical torus and often shortened to ST

Fictional characters

  • St. Claire, a TV presenter, from the film Who Is Killing the Great Chefs of Europe?, portrayed by Peter Sallis

Other uses

  • Scheduled Tribes, in India
  • Striker (association football), a position in association football
  • St (British English), a saint, especially in Christianity
  • St. (American English), a saint, especially in Christianity
  • ST, the ship prefix for a steam tug or steam trawler
  • ST, a type of London bus
  • ST, a court-ordered pseudonym used during a British court case; see Sudiksha Thirumalesh case
  • -st, a suffix for an ordinal number, such as 1 or 21
  • s.t., abbreviation of sine tempore, a Latin term used to indicate that a lecture will begin at the exact time; see academic quarter (class timing)

See also

  • ΣΤ (disambiguation) (sigma tau)
  • STST (disambiguation)
  • STFC (disambiguation) for uses of ST F.C.