| Rank | Abbreviation | Meaning |
|---|
| ***** | GCCG | Generic Collectible Card Game
| |
| ***** | GCCG | Gray Coal Company Gray
| |
| **** | GCCG | Gabriel Coal Company Gabriel
| |
| **** | GCCG | Generic Conference Control Gateway
| |
| **** | GCCG | German Code of Corporate Governance
| |
| *** | GCCG | Gartside Coal Company Gartside
| |
| *** | GCCG | Government Construction Clients Group
| |
| *** | GCCG | Green Country Corvair Group
| |
| *** | GCCG | Gynecological Cancer Cooperative Group
| |
| *** | GCCG | Gay Classic Car Group
| |
| *** | GCCG | Grognard the Collectable Card Game
| |
| ** | GCCG | Gulf Coast Consulting Group
| |
| ** | GCCG | Gillespie Coal Company Gillespie
| |
| ** | GCCG | Greenfield Coal Company Greenfield
| |
| ** | GCCG | Global Credit Consulting Group
| |
| * | GCCG | Gatley Carrs Conservation Group
| |
| * | GCCG | Grand Coalition for Change Government
| |
| * | GCCG | Global Compliance Consultancy Group
| |
| * | GCCG | Gentry Coal Company Gentry
| |
| * | GCCG | Gold Coast Cymbidium Growers
| |
| * | GCCG | Grant Communications Consulting Group
| |
| * | GCCG | Gateway Cities Council of Governments
| |
| * | GCCG | Guentzler Collins Concept Group
| |
| * | GCCG | German Codex of Corporate Governance
| |
| * | GCCG | Galatia Coal Company Galatia
| |