OST may refer to:

Music

Original soundtrack A soundtrack is recorded music accompanying and synchronised to the images of a motion picture, drama, book, television program, radio program, or video game; a commercially released soundtrack album of music as featured in the soundtrack of ...

* O.S.T., an alias of electronic musician Chris Douglas * ''O.S.T.'' (album), by the People Under the Stairs

Science and technology

* Object Storage Target in computing, used by the Lustre file system an others *

Oligosaccharyltransferase Oligosaccharyltransferase or OST () is a membrane protein protein complex, complex that transfers a 14-sugar oligosaccharide from dolichol to nascent protein. It is a type of glycosyltransferase. The sugar Glc3Man9GlcNAc2 (where Glc=Glucose, Man= ...

, an enzyme * Open-space technology, for organising meetings * Orbit stabiliser theorem in mathematics * Offline Storage Table, a Microsoft file format *

OST Family Members of the organic solute transporter (OST) familyTC# 2.A.82 (''Slc51'' genes) have been characterized from a small bottom feeding species of fish called the little skate, ''Raja erinacea''. Members have also been characterized from humans and m ...

(organic solute transporter) of genes *

Origins Space Telescope Origins Space Telescope (Origins) is a concept study for a far-infrared survey space telescope mission.vulnerability Vulnerability refers to "the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally." A window of vulnerability (WOV) is a time frame within which defensive measures are diminished, com ...

that is open-source

Organizations

Office of Science and Technology The Office of Science and Technology (OST), later (briefly) named the Office of Science and Innovation, was a non-ministerial government department of the British government between 1992 and 2007. The office was responsible for co-ordination of ...

, a British government agency *

Office of Secure Transportation The U.S. Department of Energy/National Nuclear Security Administration's Office of Secure Transportation (OST) provides safe and secure transportation of nuclear weapons and components and special nuclear materials, and conducts other missions supp ...

, a US government agency * Organisation Socialiste des Travailleurs, the Socialist Workers Organisation of Senegal *

Outer Space Treaty russian: link=yes, Договор о космосе es, link=yes, Tratado sobre el espacio ultraterrestre , long_name = Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moo ...

, a treaty regulating international law in outer space.

Places

Ostend–Bruges International Airport Ostend–Bruges International Airport, french: Aéroport International d'Oostende-Bruges, german: Internationale Flughafen Ostende-Brügge , commonly known simply as Ostend Airport,, french: Aéroport d'Oostende, german: Flughafen Ostende is an ...

, Belgium, IATA code *

Old Spanish Trail (auto trail) The Old Spanish Trail (the OST) was an auto trail that once spanned the United States with almost of roadway from ocean to ocean. It crossed eight states and 67 counties along the southern border of the United States. Work on the auto highway ...

Other uses

* Ost (surname) {{disambiguation