HST may refer to:

People

  • Harry S. Truman (1884–1972), 33rd president of the US<!--fails WP:DABACRO, but OK - see USS Harry S. Truman-->
  • Hunter S. Thompson (1937–2005), American journalist and author

Science and technology

  • Hubble Space Telescope
  • Harvard–MIT Program in Health Sciences and Technology
  • History of science and technology
  • High-speed telegraphy, a radiosport
  • High-Speed Transfer, a USRobotics modem protocol
  • Highstand systems tract, in the sequence stratigraphy branch of geology

Transportation and military

  • Hastings railway station, Melbourne (Station code), Australia
  • Helicopter support team, in the US Marine Corps
  • Helsinki City Transport (Swedish: ')
  • Heritage Shunters Trust, an English rail preservation society
  • High-speed train, a type of rail transport
  • InterCity 125 or High Speed Train, UK
  • High Street (Glasgow) railway station (station code), Scotland
  • High Sierra Trail, in California, US
  • Homestead Air Reserve Base (IATA code), Florida, US
  • USS Harry S. Truman (nickname: HST), an aircraft carrier of the US Navy
  • High-speed transport, a type of amphibious assault ship

Other uses

  • Harmonized sales tax, in Canada
  • Hawaii–Aleutian Standard Time (UTC−10)
  • Hegemonic stability theory, in international relations
  • Holden Street Theatres, Adelaide, Australia
  • Hospital Santo Tomás, in Panama City, Panama
  • Host Hotels & Resorts (stock ticker $HST), American REIT