| Abbreviation | Definition |
|---|---|
| EFP | Explosively Formed Penetrator |
| EFR | Essential Facility Requirements |
| EFRF | Equipment Failure Report Form |
| EFRP | Enhanced Full Rate Production |
| EFS | Elite Firing Squad |
| EFSP | Enhanced Flight Screening Program |
| EFST | Essential Fire Support Task |
| EFT | Electronic Funds Transfer |
| EFTC | Equipment Fuel Tank Capacity |
| EFTO | Encrypt for Transmission Only |
| EGA | Eagle, Globe, and Anchor (Marine's symbol) |
| EGCAE | Experts Group for Command Application Environment |
| EGIS | Enterprise Geographic Information System |
| EGM | Earth Gravity Model |
| EGM | Extended Range Guided Munitions |
| EGNOS | European Geostationary Navigation Overlay System |
| eGPC | Electronic Government Purchase Card |
| EGPWS | Enhanced Ground Proximity Warning System |
| EGR | Embedded GPS (Global Positioning System) Receiver |
| EGR | Embedded GPS Receiver |