| Abbreviation | Definition |
|---|---|
| CGM | Computer Graphics Metafile |
| CGNSE | Changes in Global National Security Environment |
| CGP | Character Graphics Printer |
| CG-PA | Commanding General of the Philippine Army |
| CGRS | Common Geographic Reference System |
| CGS | Canadian Government Ship |
| CGS | Chief of General Staff (British Army) |
| CGS | Chief of General Staff (Canada) |
| CGS | Common Ground Station |
| CGS | CONUS (CONtinental United States) Ground Station |
| CGS/GSM | Common Ground Station/Ground Station module |
| CGSC | Command and General Staff College |
| CGSD | Computer Graphics Systems Development |
| CGSOC | Command and General Staff Officer Course |
| CGSP | Conventional Geometry Smart Projectiles |
| CGSS | Command and General Staff School |
| CGSSP | Command Guided Spin Stabilized Projectile |
| CGTSS | Command Group Training Support System |
| CGU | Coast Guard Unit |
| CGU | Covert Guerrilla Unit |