| OHI | Observatory Hill, Incorporated
| Others |
| OHI | Obstetric Hemorrhage Initiative
| Others |
| OHI | Ocean Health Index
| Others |
| OHI | Ocean Health Initiatives
| Others |
| OHI | Office Home Industrial
| Others |
| OHI | Office of Health Informatics
| Others |
| OHI | Oman Holdings International
| Others |
| OHI | Omega Healthcare Investors
| Others |
| OHI | On Hand Inventory
| Others |
| OHI | One Health Institute
| Others |
| OHI | Optimum Health Institute
| Others |
| OHI | Oral Health Infrastructure
| Others |
| OHI | Oral Hygiene Index
| Others |
| OHI | Oral Hygiene Instruction
| Others |
| OHI | Organizational Health Index
| Others |
| OHI | Organizational Health Inventory
| Others |
| OHI | Orthotic Holdings Inc
| Others |
| OHI | Other Health Impaired
| Others |
| OHI | Other Health Impairment
| Others |
| OHI | Other Health Impairments
| Others |
| OHI | Other Health Insurance
| Others |
| OHI | Our Home Improvement
| Others |
| OHI | Oxford Histological Index
| Others |