| Abbreviation | Definition |
|---|---|
| MGI | Midrand Graduate Institute |
| MGI | Municipal Governance Institute |
| MGI | mutual guarantee institution |
| MGNG | Mestna galerija Nova Gorica |
| MGNG | Mestni galeriji Nova Gorica |
| MHI | Manufactured Housing Institute |
| MHI | Material Handling Institute |
| MHI | Minneapolis Heart Institute |
| MHI | Multicultural Health Institute |
| MHIF | Milwaukee Heart Institute Foundation |
| MHIF | Minneapolis Heart Institute Foundation |
| MHIF | Montreal Heart Institute Foundation |
| MHKIE | Member of Hong Kong Institution of Engineers |
| MHRI | Mongolian Human Resources Institute |
| MHUPA | Ministry of Housing Urban Poverty Alleviation |
| MHUPA | Ministry of Housing & Urban Poverty Alleviation |
| MI | Marketing Institute |
| MI | Member Institutions |
| MI | Minority Institutions |
| MIA | Malaysia Institute of Accountants |