| Abbreviation | Definition |
|---|---|
| CGS | Société canadienne de géotechnique |
| CGS | Socit canadienne de gotechnique |
| CGS | -ý0if |
| CGS | Zho¯ngguo´ Di`qui´wu`li? Xue´hui` |
| CGS | Zhongguo Diquiwuli Xuehui |
| CGS | Zhongguo Di quiwu li Xuehui |
| CGSI | Consumer Guidance Society of India |
| CGSI | Czechoslovak Genealogical Society International |
| CGSNA | Clan Gunn Society of North America |
| CGU | Canadian Geophysical Union |
| CGU | Union Géophysique Canadienne |
| CGU | Union Gophysique Canadienne |
| CHA | Canadian Historical Association |
| CHA | Société Historique du Canada |
| CHA | Socit Historique du Canada |
| CHAC | Computer History Association of California |
| CHAOS | Clearly a Happier amateur Oar Society |
| CHAPS | Coloured Horse and Pony Society |
| CHAS | California Historical Artillery Society |
| CHES | Ches Harambee Education Society |