GCA

• GCA (gene)
• GCA Games Convention Asia
• GCA Network Ltd
• GCA Savvian
• Gahanna Christian Academy
• Garden Centers of America
• Garland Christian Academy
• Geelong Cricket Association
• Generalized Clifford algebra
• Geochimica et Cosmochimica Acta
• Georgia Cyber Academy
• Georgia-Cumberland Academy
• Giant-cell arteritis
• Global Cargo Association Ltd
• Global Communications Academy
• Goa Cricket Association
• Gothenburg City Airport
• Government College of Architecture
• Government College, Ajmer
• Grace Christian Academy (Cayman Islands)
• Grand Canyon Association
• Grand Central Airport (United States)
• Grand China Air
• Granville Christian Academy
• Great Commission Association
• Greek Cypriot Administration of Southern Cyprus
• Greenbrier Christian Academy
• Greig City Academy
• Groceries Code Adjudicator
• Ground-controlled approach
• Gujarat Cricket Association
• Gun Control Act of 1968
• Gun Control Australia
• Guwahati College of Architecture
• The Great Canadian Appathon
• The Greeting Card Association