| Acronym | Definition |
|---|
| IMARC | Information Management Research Centre (Sinagpore) |
| IMARC | Independent Methodist Arminian Resource Center |
| IMARC | In-Mold Adjustable Rheological Control (trademark of Beaumont Technologies, Inc.; plastics engineering technology) |
| IMARC | Interactive Media Architects |
| IMARC | Investors Mortgage Asset Recovery Company (Santa Ana, CA) |
| IMARC | International Market Analysis Research and Consulting (various locations) |
| IMARC | International Microwave and RF (Radio Frequency) Conference (IEEE) |
| IMARC | Improved Maritime Auxiliary RF Components |