HST

HST may refer to:

Science and technology

• The Hubble Space Telescope
• Harvard–MIT Program of Health Sciences and Technology
• The 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

• Helsinki City Transport (Swedish: Helsingfors stads trafikverk)
• Heritage Shunters Trust, an English rail preservation society
• InterCity 125 or High Speed Train, UK
• High-speed trains in general, see high-speed rail
• High Street (Glasgow) railway station, Scotland, station code

Other uses

• Half-Square or Half Square Triangle a block in quilting
• Harmonized sales tax, in Canada
• Hawaii-Aleutian Standard Time (UTC−10)
• Hegemonic stability theory, in international relations
• Helicopter support team, in the United States Marine Corps
• High Sierra Trail, in California, United States
• Holden Street Theatres, Adelaide, Australia
• Homestead Air Reserve Base, Florida, US, IATA code
• Hospital Santo Tomas, in Panama City, Panama
• Harry S. Truman, President of the United States
• Hunter S. Thompson, American journalist and author
• Host Hotels & Resorts, American REIT using the stock ticker $HST