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 Swedish Chamber 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 Subcommissural organ, a small glandular structure in the brain 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"