| Acronym | Meaning |
 | GFI | Ground Fault Interrupter |
| GFM | Government Furnished Material |
| GFP | Government Furnished Property |
| GFS | Government Furnished Software |
| GFWS | Ground Proximity Warning System |
| GIDEP | Government/industry Data Exchange Program |
| GIE | Groupement D'interets Economiques |
| GKS | Graphical Kernal System |
| GLS | Glide Slope |
| GM | Ground Map |
| GMS | Gas Management System |
| GMT | Greenwich Mean Time |
| GND | Ground |
| GOE | Government Owned Equipment |
| GOMM | General Organizational Maintenance Manuals |
| GOSIP | Government Open Systems Interconnection Protocol |
| GP(SAL & IR) | Guided Projectile (semi-active Laser And Infra Red |
| GPETE | General Purpose Electronic Test Equipment |
| GPI | Government Preliminary Inspection |
| GPM | Gallons Per Minute |
| GPM | General Processing Module |
| GPO | Government Printing Office |
| GPPB | General Power Plant Bulletin (tdc 06) |
| GPS | Global Positioning System |
| GPS | Ground Processing System |
| GPTE | General Purpose Test Equipment |
| GR | Gear |
| GRBX | Gearbox |
| GRD | Guard |
| GRDS | Generic Radar Display System |
| GRND | Ground |
| GS | Glide Slope |
| GS | Ground Speed |
| GTA | Ground Test Article |
| GTIP | G-tolerance Improvent Program |
| GTV | Ground Test Vehicle |
| GUID | Guidance |
| GVIB | Gearbox Vibration |
| GW | Gross Weight |
| H/V | Height-velocity |
| H/W | Hardware |
| HANAP | Hardness Assessment And Network Analysis Program |
| HARDMAN | Military Manpower Versus Hardware Procurement |
| HARM | High Speed Anti-radiation Missile |
| HBS | Hardware Breakdown Structure |
| HC | Hazardous Code |
| HCI | Hardness Critical Item |
| HCP | Hardness Critical Process |
| HCP | Hazardous Critical Procedures |
| HDBK | Handbook |
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