SCO may refer to one of two possible, but distinct, companies:
- SCO Group - Company originally known as "Caldera Systems", which acquired several things from Santa Cruz Operation in 2001. Among those: source code for UNIX, two divisions of the former Santa Cruz Operation, and the "SCO" trademark. Caldera later changed its name to "SCO Group"
Additional related articles:
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SCO may also refer to:
- Sharable Content Objects in the organization of courseware
- The country code for Scotland, as used on the new EU version of Scotland's car registration plates