OST may refer to:
Music
*
Original soundtrack, recorded sound accompanying a production such as a film
* O.S.T., an alias of electronic musician
Chris Douglas
*
''O.S.T.'' (album), by the People Under the Stairs
* OS/T (album) by S-type
Science and technology
* Object Storage Target in computing, used by the
Lustre file system an others
*
Oligosaccharyltransferase
Oligosaccharyltransferase or OST () is a membrane protein 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= Mannose, and ...
, an enzyme
*
Open-space technology, for organising meetings
* Open Systems Theory, a form of sociotechnical systems pioneered by
Fred Emery
*
Orbit stabiliser theorem in mathematics
*
Offline Storage Table, a Microsoft file format
*
OST Family (organic solute transporter) of genes
*
Origins Space Telescope, a space telescope mission
* Open Source Threat, any software demonstrating a device
vulnerability
Vulnerability refers to "the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally." The understanding of social and environmental vulnerability, as a methodological approach, involves ...
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, a US government agency
*
Order of the Solar Temple
The Order of the Solar Temple (, OTS), or simply the Solar Temple, was a new religious movement and secret society, often described as a cult, notorious for the mass deaths of many of its members in several mass murders and suicides throughout ...
, French esoteric cult
* Organisation Socialiste des Travailleurs, the
Socialist Workers Organisation of Senegal
*
Outer Space Treaty
The Outer Space Treaty, formally the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is a Multilateralism, multilateral treaty that forms the bas ...
, a treaty regulating international law in outer space.
Places
*
Ostend–Bruges International Airport, Belgium, IATA code
*
Old Spanish Trail (auto trail)
Other uses
*
Ost (surname)
{{disambiguation