| Abbreviation | Definition |
|---|---|
| SMIB | Security Management Information Base |
| SMIC | Southwestern Military Industrial Complex |
| SMILS | Sonar Missile Impact Location System |
| SMILS | Sonobuoy Missile Impact Locating System |
| SMILS | Sonobuoy Missile Impact Location System |
| SMIO | Search and Rescue (SAR) Mission Information Officer |
| SMIO | Senior Military Intelligence Officer |
| SMIS | Security Management Information System |
| SMITHS | Spinning Mass Implemented Terminal Homing Seeker |
| SMJ | Schoenstatt- MannesJugend |
| SMK | Shelter Management Kit |
| SMK | Smoke |
| SMKLS | Smokeless |
| SMKU | Shelter Mock-Up |
| SMLE | Short Magazine Lee Enfield |
| SMLE | Short Magazine, Lee Enfield |
| SMMP | System MANPRINT Management Plan |
| SMMS | Support Maintenance Management System |
| SMMU | Second Military Medical University |
| SMMW | Submillimeter Wave |