GCS

GCS may refer to:

Cartography

• Geographic coordinate system, used to define a location on the Earth's surface
• Galactic coordinate system, a celestial coordinate system

Computers; computer programming

• Game Creation System, computer game engine
• Group communication system, computer software
• Group Control System(VM), an IBM VM Operating system component

Medical and psychological uses

• Glasgow Coma Scale (or Glasgow Coma Score) for patients' level of consciousness
• Glucocorticosteroids, a class of steroid hormones

Schools and colleges

• German Church School, Addis Ababa, Ethiopia
• Glenelg Country School, Ellicott City, MD, US
• Government College of Science, Lahore, Pakistan
• Grace Christian School a K-12 school in Valrico, Florida
• Grace Church School, a K-8 school in lower Manhattan, US
• Greenwood College School, Toronto, Ontario, Canada
• Guildford County School, Guildford, England

Other uses

• General Campaign Star, Canadian Forces medal
• Grand Central Station, Manhattan, New York, US
• Ground Control Station in telecommunications
• Global Combat Ship, a planned naval vessel