GCA

GCA may refer to:

Education

Garden Centers of America, an American trade organization
GCA Airlines, a Colombia airline
GCA Games Convention Asia, a video game and interactive technology convention
GCA Savvian, an American investment bank
Giant cell arteritis, a disorder
Global Center on Adaptation, an international organization aiming to accelerate climate change adaptation solutions
Goodreads Choice Awards, book awards
Gothenburg City Airport, in Sweden
Grand Canyon Association, an American fundraising organization
Grand Central Airport (United States), a former airport in Glendale, California, United States
Grand China Air, a Chinese airline
The Great Canadian Appathon, a Canadian game design and development competition
Great Commission Association, an association of evangelical Christian churches
Greek Cypriot Administration of Southern Cyprus, a name used for the internationally recognized Republic of Cyprus by Turkey since they do not recognize it
The Greeting Card Association, a British trade organization
Ground-controlled approach
Groceries Code Adjudicator, in the United Kingdom
Gun Control Act of 1968, a U.S. federal law
Gun Control Australia, an Australian lobbying group
Greater Central Asia, a region of Eurasia