| Abbreviation | Definition |
|---|---|
| MAHI | Mid America Heart Institute |
| MAHRI | Maritime Archaeological and Historical Research Institute |
| MAI | Marina Abramovic Institute |
| MAIT | Maharaja Agrasen Institute of Technology |
| MALDI | Minority Adoption Leadership Development Institute |
| MARI | Mandala Assessment and Research Institute |
| MARI | Middle American Research Institute |
| MARINE | Monterey Area Research Institutions Network for Education |
| MASMI | Mid Atlantic Sales Marketing Institute |
| MATI | Meghalaya Administrative Training Institute |
| MATI | Meta Analysis Training Institute |
| MAVI | Max Aronoff Viola Institute |
| MBARI | Monterey Bay Aquarium Research Institute |
| MBCI | Mennonite Brethren Collegiate Institute |
| MBI | Macklin Business Institute |
| MBI | Massachusetts Broadband Institute |
| MBI | McIntire Business Institute |
| MBI | McKnight Brain Institute |
| MBI | Metal Buildings Institute |
| MBI | Metropolitan Business Institute |