| Acronym | Definition |
|---|
| GCA➣Giant Cell Arteritis |
| GCA➣Greeting Card Association |
| GCA➣Grace Christian Academy |
| GCA➣Ground Control Approach (radar landing system) |
| GCA➣Ground Controlled Approach |
| GCA➣Gun Control Act of 1968 |
| GCA➣Groupe Charles André (French transport company) |
| GCA➣Government Contracting Activity |
| GCA➣Glycocholic Acid |
| GCA➣Graphic Communication Association |
| GCA➣Grid Computing and Applications |
| GCA➣Game Control Adapter |
| GCA➣Gas Cost Adjustment |
| GCA➣Georgia Chiropractic Association |
| GCA➣Gulf Coast Avionics (Florida) |
| GCA➣Georgia Council for the Arts |
| GCA➣Génie Civil d'Armor (French: Engineering Armor) |
| GCA➣Graphic Communications Association |
| GCA➣Global Communications Agency |
| GCA➣Gas Chromatography Analysis |
| GCA➣Greig City Academy (UK) |
| GCA➣Global Coalition for Africa |
| GCA➣General Combining Ability |
| GCA➣Government Controlled Area |
| GCA➣General Contractors Association |
| GCA➣Georgia Center for Assessment (University of Georgia) |
| GCA➣Greek Cypriot Administration |
| GCA➣Grains Council of Australia |
| GCA➣Greater-Cincinnati Area |
| GCA➣Golf Clubmakers Association |
| GCA➣Grade Correspondence Analysis (data clustering) |
| GCA➣going concern assumption |
| GCA➣Groupe Chiroptères Aquitaine (French bat group) |
| GCA➣Guidance and Control Assembly |
| GCA➣Georgia-Cumberland Academy (Calhoun, GA) |
| GCA➣Great Circle Associates |
| GCA➣Grant Contract Accounting (various organizations) |
| GCA➣Growing Community Assets (Big Lottery Fund; UK) |
| GCA➣Gross Construction Area |
| GCA➣Generation Control Application (various companies) |
| GCA➣Galiano Conservancy Association (est. 1989; Canada) |
| GCA➣Garment Contractors Association |
| GCA➣Gold Circle Award (various organizations) |
| GCA➣Gilles Charignon Architectures (French architecture firm) |
| GCA➣Gaming Control Act |
| GCA➣Graduate Cost Analysis |
| GCA➣Gain-Controlled Amplifier |
| GCA➣General Communications Architecture |
| GCA➣Ginet Courtage d'Assurances (French insurance brokerage) |
| GCA➣Goa Cricket Association |
| GCA➣General Customs Administration (China) |
| GCA➣General Communications Architecture (Ingress) |
| GCA➣GameCube Advanced (website) |
| GCA➣Groupement des Conventions d'Assurances (French: Insurance Grouping of Conventions) |
| GCA➣Geophysical Corporation of America (defunct manufacturing company) |
| GCA➣Glasgow Christian Academy (Glasgow, KY) |
| GCA➣Gedatsu Church of America (Raymond, CA) |
| GCA➣General Commercial Availability |
| GCA➣Gestion Conseil & Assistance (French: Management Consulting & Assistance) |
| GCA➣Gas Conditioning Assembly |
| GCA➣Generator Coordinate Approximation |
| GCA➣Ground Control Airborne |
| GCA➣Gunite Contractors Association |
| GCA➣Geodesic Cone Array (Lockheed) |
| GCA➣GNOPP Constrained Assets |
| GCA➣Guidance Counselor Application (ARISS) |
| GCA➣Ground Control Apparatus |
| GCA➣Global Climate Agency (Switzerland) |