| Abbreviation | Definition |
|---|---|
| GLOMO | GLObal MObility |
| GLOTRAC | Global TRACking Radar |
| GLOV | Gun Launched Observation Vehicle |
| GLP | Government-Loaned Property |
| GLPS | Gun Laying and Positioning System |
| GLS | General Line School |
| GLTC | Great Lakes Training Center |
| GLTD | Ground Laser Target Designator |
| GM | Group Modem |
| GM | Guidance Manager |
| GM | Guided Missile |
| GM | Gunners Mate |
| GM1 | Gunners Mate First Class |
| GM2 | Gunners Mate Second Class |
| GM3 | Gunners Mate Third Class |
| GMAP | General Macro Assembler Program |
| GMAP | Guided Missiles Ammunition Point |
| GMAS | Global Military Aircraft Systems |
| GMC | Chief Gunners Mate |
| GMC | General Military Course |