| Abbreviation | Definition |
|---|---|
| GR | Graduated Response |
| GR | Graves Registration |
| GR | Grid Reference |
| GRASP | General Retrieval And Sort Processor |
| GRASP | GRAphical System for Presentation |
| GRAT | Ground Risk Assessment Tool |
| GRC | Gas Regulator Collar |
| GRC | General Recruiting command |
| GRC | Ground Radio Communications |
| GRCA | Ground Reference Coverage Area |
| GRCE-IPF | GuardRail Common Sensor Integrated Processing Facility |
| GRCS | GuardRail Common Sensor |
| GRCS-IPF | GuardRail Common Sensor Integrated Processing Facility |
| GRD | Guard |
| GREF | General Reserve Engineer Force |
| GRF | Global Response Force |
| GRF | Ground Reaction Force |
| GRF | Ground Reaction Forces |
| GRG | Gridded Reference Graphic |
| GRIM | GPS (Global Positioning System) Receiver Interface Module |