| IMMC | Illinois Masonic Medical Center 
| Others |
| IMMC | Integrated Mission Management Computer
| Others |
| IMMC | International Mathematical Modeling Challenge
| Others |
| IMMC | International Medicinal Mushroom Conferences
| Others |
| IMMC | International Mountain Medicine Center
| Others |
| IMMC | International Mouse Mutagenesis Consortium
| Others |
| IMMC | International Museum of Muslim Cultures
| Others |
| IMMC | International Musicians Medicine Committee
| Others |
| IMMC | Interstate Military Message Center
| Others |
| IMMC | Iowa Mathematics Modeling Competition
| Others |
| IMMC | Iowa Methodist Medical Center
| Others |