| Abbreviation | Definition |
|---|---|
| IME | Immigration Medical Examination |
| IMF | It's Mainly Fiscal |
| IMF | It's Mugabe's Fault |
| IMIS | Integrated Management Information System |
| IMLOS | Institute for Maritime Affairs and Law of Sea |
| IMP | International Management Program |
| IMPAC | International Merchant Purchase Authorization Card |
| IMPAC | Issues Mobilization Political Action Committee |
| IMPACT | Information Management, Public Affairs, Construction, and Traffic |
| IMRS | International Mathematics Research Surveys |
| IMRS | Issue Management Resolution System (IRS) |
| IMS | Indian Medical Service |
| IMTV | Intake Manifold Timing Valve |
| IN | Identic Note |
| INA | Invoking National Attention |
| INC | International Narcotics Control |
| INCSR | International Narcotics Control Strategy Reports |
| IND | Immigration and Nationality Directorate |
| IND | Independent |
| INEEL | Idaho National Engineering and Environmental Laboratory |