| Acronym | Definition |
|---|
| MHIS | Microsoft Host Integration Server |
| MHIS | Moët Hennessy Information Services (Louis Vuitton Moët Hennessy) |
| MHIS | Maxim Health Information Services (est. 1999; Gardena, CA and Beachwood, OH) |
| MHIS | Martinelli's Handyman and Inspection Service (Cool, CA) |
| MHIS | Mutual Health Insurance Scheme (Ghana) |
| MHIS | Mental Health Information Strategy (various nations) |
| MHIS | Metro Hartford Information Services (Hartford, CT) |
| MHIS | Managed Healthcare Information Services, Inc. (Roseville, CA; est. 1989) |
| MHIS | Modified Hachinski Ischemia Scale |