| Acronym | Definition |
|---|
| OMHC➣Original Manufacture Hard Case (musical instruments) |
| OMHC➣Ohio Manufactured Homes Commission (Dublin, OH; building regulation) |
| OMHC➣Olympus Managed Health Care (Miami, FL) |
| OMHC➣Ontario Morgan Horse Club (est. 1968; Canada) |
| OMHC➣Odessa Memorial Healthcare Center (Odessa, WA) |
| OMHC➣Outpatient Mental Health Centers |
| OMHC➣Ontario Marine Heritage Committee (Canada) |