GCS may refer to:
Cartography Galactic coordinate system Geographic coordinate system
Computing Game creation system Gauss Centre for Supercomputing, in Germany Google Cloud Storage Group communication system Group Control System, an IBM VM Operating system component
Education Gadsden County School District, in Florida, United States Gallantry Cross, Silver, an honour of the Republic of Venda German Church School, in Addis Ababa, Ethiopia Glenelg Country School, in Ellicott City, Maryland, United States Gorey Community School, in County Wexford, Ireland Government College of Science, Lahore, Pakistan Grace Christian School (Florida), in Valrico, Florida, United States Grace Church School, in New York City Granville County Schools, in North Carolina, United States Greenfield Community School, in Dubai Greenville Christian School, in Mississippi, United States Greenwood College School, in Toronto, Ontario, Canada Guildford County School, in England
Medicine Gamma-glutamylcysteine synthetase Gender confirming surgery Glasgow Coma Scale Glucocorticosteroids Glycine cleavage system
Other uses General Campaign Star (Canada), a Canadian Forces medal Grand Central Station, in New York City Satellite ground control station UAV ground control station Global Civic Sharing, a South Korean charity Global Combat Ship, of the Royal Navy Gold Coast Suns, an Australian Football League team Green Cove Springs, Florida
See also GC (disambiguation)