| Acronym | Definition |
|---|
| CGG | Church of the Great God |
| CGG | Centre for Good Governance (India) |
| CGG | Compagnie Générale de Géophysique (French geophysical services company) |
| CGG | Campaign for Good Governance (Sierra Leone) |
| CGG | Capital Gold Group (Sherman Oaks, CA) |
| CGG | Cytosine-Guanine-Guanine |
| CGG | Canadian Grenadier Guards (Canadian reserve military unit) |
| CGG | Commerz Grundbesitz Gruppe (German commercial real estate company) |
| CGG | Colloquium on Generative Grammar |
| CGG | Cancer Genetics Group (Birmingham, UK) |
| CGG | Collège Gérald-Godin (Quebec, Canada) |
| CGG | Clean Green Gracious (environment; Japan) |
| CGG | Contingency Gravity Gradient |
| CGG | Comptoir General des Glaces |
| CGG | Cercle Généalogique de Guebwiller (French: Guebwiller Genealogy Circle) |
| CGG | California Grape Grower (magazine, now Wines & Vines) |
| CGG | Computer Game Geek |