| Abbreviation | Definition |
|---|---|
| MRT | Microscopy Research and Technique |
| MRT | Museum Research Traineeship |
| MRTI | Materials Research and Technology Institute |
| MRTP | Market Research Technique Process |
| MRU | Mankind Research Unlimited |
| MRU | Migration Research Unit |
| MRU | Multicampus Research Units |
| MRUN | Malaysia Research University Network |
| MRUN | Midwest Research University Network |
| MSAR | Microtech Small Arms Research |
| MSCRG | Multiple Sclerosis Collaborative Research Group |
| MSDD | Multi-sensory developmental delays |
| MSMR | Master of Science in Marketing Research |
| MSMR | Ministry for Science and Medical Research |
| MSOR | M S Operations Research |
| MSPR | Maryland Society for Paranormal Research |
| MSR | Mars Sample Return |
| MSR | Music Safety Research |
| MSRA | Michigan Shipwreck Research Associates |
| MSRA | Michigan Shipwreck Research Association |