| Acronym | Definition |
|---|
| IMHS | Interscan Messaging Hosted Security (Trend Micro) |
| IMHS | Indian Military Historical Society (UK) |
| IMHS | Infant Mental Health Specialist |
| IMHS | Integrated Mental Health Services (Austin, TX) |
| IMHS | Intramedullary Hip Screw (surgical hip repair) |
| IMHS | International Modern Hospital Show (medical devices trade show; Tokyo, Japan) |
| IMHS | Ian Mikardo High School (UK) |
| IMHS | Internet Modern History Sourcebook (online resource) |
| IMHS | Integrated Mail Handling System (US Postal Service) |
| IMHS | Innovation Montessori High School (Ocoee, FL) |