OCS

OCS or Ocs may refer to:

Military

• Officer Candidate School or Officer Cadet School, a training establishment in many countries where military officers are trained

Music

• Ocean Colour Scene, an English rock group
• Thee Oh Sees, an American experimental rock band
• Omul cu Sobolani, a Romanian alternative rock group

Games

• Operational Combat Series from The Gamers and Multi-Man Publishing.

Government

• The UK's Office for Civil Society, part of the government's Cabinet Office
• Office of the Chief Scientist (Australia), a part of Department of Innovation, Industry, Science and Research

Places

• Öcs, a village in Veszprém county, Hungary
• O'Connell Street, a street in Dublin, Ireland
• Outer Continental Shelf, a maritime federal land zone beyond the jurisdiction of the United States

Psychiatry and medicine

• Obsessive-compulsive syndrome or obsessive-compulsive disorder, a psychiatric anxiety disorder
• Oral corticosteroids, medication used for a variety of illnesses, chiefly through the mechanism of suppressing the immune system.

Sports

• Outback Champions Series, a series of professional tennis events
• On course side, a term meaning that a sailboat has crossed the start line of a race early

Science and technology

• Carbonyl sulfide, a chemical compound with the formula OCS
• Microsoft Office Communications Server, a software product
• OCS Inventory (Open Computer and Software Inventory), an application which inventories IT assets
• Amiga Original chipset, a Commodore Amiga chipset
• Open Collaboration Services, an open and vendor-independent API to access online services
• Online Charging System, a system allowing providers of communication services to charge customers based on service usage
• Origin Content Server, another name for a Web Server

Transportation

• Overhead contact system, a system which provides electric power to trains

Schools and alumni associations

• Oklahoma Christian School
• Old Cliftonian Society, the society for the alumni of Clifton College, Bristol, England
• Opelika City Schools, a school district headquartered in Opelika, Alabama, United States
• Senator O'Connor College School in Parkwoods, Ontario, Canada

TV channels

• OCS, is a French series of dedicated movies/series TV channels operated by Orange S.A..

Other uses

• Old Church Slavonic, a Slavic language which developed in the 9th century
• Federation of Old Cornwall Societies or sometimes OCS, a Cornish history charity
• Ophite Cultus Satanas, a satanic cult founded in 1948 by Herbert Arthur Sloane
• Original Character, a character in a major franchise created by a fan of something, and self inserted into that franchise usually via art and fanfictions.