SCO

SCO or sco may refer to:

Businesses and organizations

 * Santa Cruz Operation, a company founded in 1979 that existed under that name until 2001
 * SCO Group, a software company formerly called Caldera International and Caldera Systems
 * SCO OpenServer (formerly SCO Unix), an operating system made by the above companies
 * Shanghai Cooperation Organisation, a Eurasian inter-governmental political, economic, and security organization
 * Society of Canadian Ornithologists
 * Southern College of Optometry in Memphis, Tennessee
 * Special Communications Organization, a Pakistani telecommunication company
 * The ICAO airline code for Scoot

Orchestras

 * Scottish Chamber Orchestra
 * Singapore Chinese Orchestra

Science and technology

 * Scorpius, abbreviation for the constellation
 * Self-checkout machines, automated alternatives to traditional cashier-staffed checkout at retailers
 * Single cell oil, a type of oil produced by a microbe
 * Synchronous Connection Oriented protocol, used for audio devices in the Bluetooth protocol stack
 * Synthetic crude oil, a type of crude oil

Other uses

 * .sco, a formerly proposed top-level domain for Scotland
 * Aktau Airport in Kazakhstan (IATA code SCO)
 * Angers SCO, a French football club
 * Scots language (ISO 639-2 & -3 alpha-3 code: sco)
 * Selected Characteristics of Occupations, a companion volume to the U.S. Department of Labor's Dictionary of Occupational Titles
 * Single Cell Orchestra, stage name of musician Miguel Fierro
 * Sports teams representing Scotland, by country code
 * Railway service code for South Coast Line, New South Wales, Australia
 * Syllabus, or Standard Course Outline
 * United States Office of Special Counsel (disambiguation), various government offices referred to as the "Special Counsel's Office"