| IMRA | IARS Mentored Research Awards 
| Others |
| IMRA | Idaho Midget Racing Association
| Others |
| IMRA | Illawarra Model Railway Association
| Others |
| IMRA | Illinois Midget Racing Association
| Others |
| IMRA | Incentive Manufacturers and Representative Alliance
| Others |
| IMRA | Incentive Manufacturers and Representatives Alliance
| Others |
| IMRA | Independent Media Review and Analysis
| Others |
| IMRA | Industrial Manufacturers Representatives Association
| Others |
| IMRA | Information Management and Risk Analysis
| Others |
| IMRA | Instructional Media Resource Associate
| Others |
| IMRA | Integrated Modulator Receiver Assembly
| Others |
| IMRA | International Management Research Academy
| Others |
| IMRA | International Mass Retail Association
| Others |
| IMRA | International Mile Racing Association
| Others |
| IMRA | Irish Mountain Running Association
| Others |
| IMRA | Italian Mixed Reality Association
| Others |