| Abbreviation | Definition |
|---|---|
| MCRC | Murugappa Chettiar Research Centre |
| MCRI | Molecular Cardiology Research Institute |
| MCRI | Murdoch Children's Research Institute |
| MCRI | Myeloma Crowd Research Initiative |
| MCRN | Medicines for Children Research Network |
| MCSR | Mississippi Center for Supercomputing Research |
| MCTR | McMaster Centre for Transfusion Research |
| MCTR | Mitsubishi Chemical Techno Research |
| MCTR | Multidisciplinary Clinical and Translational Research |
| MD | Muscular dystrophy |
| MDG | Millennium Development Goals |
| MDLS | Mammary Ductal Lobular System |
| MDRA | Marketing and Development Research Associates |
| MDRB | Medications Discovery Research Branch |
| MDRC | Manpower Demonstration Research Corporation |
| MDRC | Memory Disorders Research Center |
| MDRC | Mongolian Development Research Center |
| MDRD | Modification of Diet in Renal Disease |
| MDRG | Market Dynamics Research Group |
| MDRG | Molecular Diagnostics Research Group |