| Abbreviation | Definition |
|---|---|
| IIMG | Interagency Incident Management Group |
| IIS | Internet Information Services |
| ILAR | Institute For Laboratory Animal Research |
| ILInet | Influenza-like Illness Surveillance Network |
| IM | IntraMuscular |
| IMB | Irish Medicines Board |
| IMB(CDER) | Interface Management Branch (CDER) |
| IMB(CDRH) | Information Management Branch (CDRH) |
| IMC | Information Management Consultants, Inc. |
| IMCC | Information Management Coordinating Committee |
| IMDA | Irish Medical Device Association |
| IMDB(CDRH) | Immunology and Molecular Diagnostics Devices Branch (CDRH) |
| IMDG | International Maritime Dangerous Goods Code |
| IMLS | Institute of Museum and Library Services |
| IMP | Investigational Medicinal Product |
| IMPAC | Information for Management, Planning, Analysis, and Coordination |
| IMPD | Investigational Medicinal Product Dossier |
| IMPD | Investigational Medicinal Product Dossier (EU) |
| IMS(CDRH) | Issues Management Staff (CDRH) |
| IMT | International Medical Terminology |