| Abbreviation | Definition |
|---|---|
| EMGWS | Electromagnetic Gun Weapon System |
| EMI | Electromagnetic Interface |
| EMI | Electro-Magnetic Interference |
| EMI | Extra Military Instruction |
| EMIO | Expanded Maritime Interception Operations |
| EML | Ecological Metadata Language |
| EMM | Enrolled Missouri Militia |
| EMMA | East Meadow Materials Area |
| EMMS | Express Mail Military Service |
| EMO | Embarkation Medical Officer |
| EMO | Emergency Machine Off |
| EMO | Engineering Management Office |
| EMOS | Entry Military Occupational Specialty |
| EMP | Electro-Magnetic Pulse |
| EMP | Emergency Management Plan |
| EMP | Enhanced Marksmanship Program |
| EMP | Expeditionary Medicine Program |
| EMP | Experimentation Master Plan |
| EMPA | European Military Press Association |
| EMPL | Employment |