| Acronym | Definition |
|---|
| IMRF➣Illinois Municipal Retirement Fund |
| IMRF➣International Multisensory Research Forum |
| IMRF➣International Maritime Rescue Federation |
| IMRF➣International Media Research Foundation (Japan; est. 1992) |
| IMRF➣Intermediate Moment-Resisting Frame |
| IMRF➣International Medical Relief Fund |