SCO

SCO may refer to:

• Shanghai Cooperation Organization, an international organization.
• One of two distinct companies:
  • SCO Group – Company originally known as "Caldera Systems", which acquired several things from Santa Cruz Operation in 2001: a UNIX licensing business, two divisions of the former Santa Cruz Operation, and the "SCO" trademark. Caldera later changed its name to "SCO Group".
  • Santa Cruz Operation – Company founded in 1979, which sold a major division and its namesake trademark in 2001, and has since renamed itself Tarantella.
• Sharable Content Objects in the organization of courseware – see SCORM
• The country code for Scotland, as used on the new EU version of Scotland's car registration plates
• Scots language (ISO 639 alpha-3, sco)
• "Let's Go" – when used as slang.