SCO

SCO or sco may refer to:

• 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

• Scottish Chamber Orchestra
• Singapore Chinese Orchestra
• Swedish Chamber Orchestra

• 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

• .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"