| Acronym | Definition |
|---|
| MHI | Mental Health Initiative |
| MHI | Mitsubishi Heavy Industries, Ltd. (Japan) |
| MHI | Manufactured Housing Institute |
| MHI | Mitsubishi Heavy Industries |
| MHI | Maroc Hebdo International (French: Morocco Hebdo International) |
| MHI | Median Household Income |
| MHI | Montreal Heart Institute (Montreal, Quebec, Canada) |
| MHI | Military History Institute (Army Heritage Education Center, PA) |
| MHI | Main Hawaiian Islands |
| MHI | Mineral Hill Industries (Canada) |
| MHI | Minneapolis Heart Institute (Minneapolis, MN) |
| MHI | Masters in Health Informatics (degree program; various universities) |
| MHI | Manual Hyperinflation (physiotherapy) |
| MHI | Material Handling Institute (educational & certification component of MHIA) |
| MHI | Multi-Media Holdings, Inc. (Washington, DC) |
| MHI | Mended Hearts, Inc. (est. 1951) |
| MHI | Open Society Mental Health Initiative |
| MHI | Medical and Health Insurance |
| MHI | Matthew Hoyle International (Hong Kong) |
| MHI | Med Help International |
| MHI | Medicare Health Insurance |
| MHI | Member Help Interactive (America Online) |
| MHI | Muslim Hands International (NGO) |
| MHI | Masters in Healthcare Innovation (Arizona State University College of Healthcare Innovation) |