| Abbreviation | Definition |
|---|---|
| IMS | Interagency Management System |
| IMS | International Military Staff |
| IMS | International Military Standardization |
| IMSA | Installation Medical Support Activity |
| IMSC | Installation Management Steering Committee |
| IMSG | Institute for Military Support to Governance |
| IMSM | International Military Spectrum Management |
| IMSM | International Military Staff Memorandum |
| IMSM | International Military Student Manager |
| IMSO | Intensive Management Staff Officer |
| IMSO | International Military Student Office |
| IMSO | International Military Student Officer |
| IMSO | International Military Students Office |
| IMSO | Istics Military Student Office |
| IMSP | Information Management Support Plan |
| IMSU | Installation Medical Support Unit |
| IMT | initial military training |
| IMT | International Military Tribunal |
| IMTS | Improve Moving Target Simulator |
| IMTS | Improved Moving Target Simulator |