| Acronym | Definition |
|---|
| IMR | Infant Mortality Rate (usually measured per thousand live births) |
| IMR | Institute of Marine Research |
| IMR | Independent Medical Review |
| IMR | Individual Medical Readiness |
| IMR | Institute for Materials Research |
| IMR | Interrupt Mask Register |
| IMR | Internet Monthly Report |
| IMR | Illness Management and Recovery |
| IMR | Interest Maintenance Reserve |
| IMR | Inspection, Maintenance and Repair (offshore industry) |
| IMR | Initial Margin Requirement (finance) |
| IMR | Information Management Research, Inc (Englewood, CO) |
| IMR | Improved Military Rifle (smokeless powder type) |
| IMR | Installation Maintenance and Repair |
| IMR | Integrated Microscopy Resource |
| IMR | Industrial Mobile Robotics |
| IMR | Interessengemeinschaft Modellraketen (German: Model Rocket Interest Group) |
| IMR | International Morab Registry |
| IMR | Interchange Modification Report |
| IMR | InterModulation Ratio |
| IMR | Independent Medical Reviewers |
| IMR | Ideo Motor Response |
| IMR | International Medical Recruitment |
| IMR | Immediate-Mode Rendering |
| IMR | Initial Modification Request |
| IMR | Inner-Most (Cell) Region |
| IMR | Instrument Meteorological (Flight) Conditions |
| IMR | Intermediate Module Repeater |
| IMR | Individuals/Moving Range (statistics) |
| IMR | Individual Medical Record |
| IMR | Information Management Representative |
| IMR | Information Management Review |
| IMR | Indian Military Review (journal) |
| IMR | Indicated Meter Reading (photography) |
| IMR | Interim Materiel Release |
| IMR | Input Message Review |
| IMR | Inert Mine, Resin-Filled |
| IMR | Isthmian Medical Research |
| IMR | Information Model Repository |
| IMR | Inventory Management Record |
| IMR | Inspection, Maintenance and Replacement (American Petroleum Institute) |
| IMR | Inter-Metallic Reaction |
| IMR | Interrupts Mask Register |
| IMR | Institute of Management & Research (India) |
| IMR | Inside Mac Radio (podcast) |
| IMR | International Meshing Roundtable (Sandia National Laboratories; est. 1992) |