| Abbreviation | Definition |
|---|---|
| OHNC | Old Harbor Native Corp |
| OHNC | Old Harbor Native Corporation |
| OHP | Ochsner Health Plan |
| OHP | On-Line Health Products |
| OHP | Oxford Health Plans, Incorporated |
| OHPA | Old Harding Pediatric Associates |
| OHPL | Olfactory Hospitality Pvt Ltd |
| OHPL | Oswal Hortitech Pvt Ltd |
| OHQ | Outdoor HeadQuarters |
| OHR | Oak Hills Research |
| OHSAS | Occupational Health and Safety Advisory Services |
| OHTC | Opera House Theatre Company |
| OI | Omega Intertainment |
| OIBL | Opt In Biz Leads |
| OIC | Office Installation Company |
| OIC | Omladinski Informativni Centar |
| OIC | Opportunity Industrialization Center |
| OIC | Oriental Insurance Company |
| OIC | Orthopaedic Implant Company |
| OICE | Olayan Investments Company Establishment |