| Abbreviation | Definition |
|---|---|
| ODCH | Oral Design Center Holland |
| ODCM | Off-site Dose Calculation Manual |
| ODEP | Orthopedic Data Evaluation Panel |
| ODH | Ohio Department of Health |
| ODH | Oxygen Deficiency Hazard |
| ODI | Oswestry Disability Index |
| ODT | Orally Disintegrating Tablet |
| OECC | Optometric Eye Care Center |
| OFI | Outlook For Hospitals |
| OGD | Oesophago-Gastro-Duodenoscopy |
| OGH | Olean General Hospital |
| OGH | Ottawa General Hospital |
| OH | Orthopaedically Handicapped |
| OH | Osteopathic Hospital |
| OHA | Ohio Hospital Association |
| OHA | Oklahoma Hospital Association |
| OHA | Ontario Hospital Association |
| OHCA | Out of Hospital Cardiac Arrest |
| OHD | Occupational Health Doctor |
| OHEP | Outdoor Hospitality Education Program |