| Abbreviation | Definition |
|---|---|
| GMLS | Guided Missile Launching Systems |
| GMM | Gunner's Mate, Missile |
| GMP | Gross Military Product |
| GMR | German Military Representative |
| GMR | Global Miss Rate |
| GMR | Graduated Mobilization Response |
| GMR | Ground Mobile Radar |
| GMR | Ground Mobile Radio |
| GMRR | Guards Motorized Rifle Regiment |
| GMRS | Global Mobility Readiness Squadron |
| GMS | Geo-stationary Meteorological Satellite |
| GMS | Global Mobility Squadron |
| GMSA | Gunners Mate Seaman Apprentice |
| GMSN | Gunners Mate Seaman |
| GMT | General Motor Transport |
| GMT | Ground Moving Target |
| GMTI | Ground Moving Target Indicator |
| GMTK | General Mechanics Tool Kit |
| GMW | Grenade Machine Weapon |
| GN | Grid North |