| Abbreviation | Definition |
|---|---|
| MRI | Medical Research Institute |
| MRI | Mental Research Institute |
| MRIA | Marketing Research and Intelligence Association |
| MRIA | Marketing Research Insights and Analytics |
| MRIA | Marketing Research Intelligence Association |
| MRIL | Milking Research and Instruction Lab |
| MRIO | Melbourne Research And Innovation Office |
| MRL | Mathematical Research Letters |
| MRL | Media Research Lab |
| MRL | Merck Research Laboratories |
| MRL | Millennium Research Laboratories |
| MRL | Musculoskeletal Research Laboratories |
| MRL | Mycobacteria Research Laboratories |
| MRLI | Medical Research Laboratories International |
| MRMC | Medical Research and Materiel Command |
| MRN | Management Research Network |
| MRN | Mind Research Network |
| MRNI | Market Research Northern Ireland |
| MRNT | Ministry of Research and New Technologies |
| MROD | Medical Research and Operations Directorate |