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, 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 that is open-source
Organizations
- Office of Science and Technology, a British government agency
- Office of Secure Transportation, a US government agency
- Order of the Solar Temple, French esoteric cult
- Organisation Socialiste des Travailleurs, the Socialist Workers Organisation of Senegal
- Outer Space Treaty, a treaty regulating international law in outer space.
Places
- Ostend–Bruges International Airport, Belgium, IATA code
- Old Spanish Trail (auto trail)
Other uses
Topics referred to by the same term
This disambiguation page lists articles associated with the title OST.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: