| Acronym | Definition |
|---|
| MHSI➣Mine Health and Safety Inspectorate (South Africa) |
| MHSI➣Material Handling Systems, Inc. (Rochester Hills, MI) |
| MHSI➣Milwaukee Health Services, Inc. (Wisconsin) |
| MHSI➣Michigan Head and Spine Institute (Pontiac, MI) |
| MHSI➣Mason & Hanger Services Inc. |
| MHSI➣Management of Head and Spinal Injuries |