GCOS may refer to:
- Affymetrix GeneChip Operating Software
- Global Climate Observing System
- General Comprehensive Operating System, a family of operating systems oriented toward mainframes, originally called GECOS (General Electric Comprehensive Operating Supervisor)
See also
- GKOS keyboard
- Geckos
- Google Chrome Operating System An open source, lightweight operating system that will initially be targeted at netbooks
If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: