sort by Rank | Alpha
| Possible Meanings | Rank |
| Oakwood Healthcare Inc | **** |
| Other Health Impairment | **** |
| Office of Health Insurance | **** |
| Omega Healthcare Investors | **** |
| Ontario Hostelry Institute | *** |
| Other Health Impairments | *** |
| Organisation Hydrographique Internationale | *** |
| Office of HIPAA Implementation | *** |
| Organic Herb Inc | *** |
| Oral Health Institute | *** |
| Orion the Hunters Institute | *** |
| Open Hardware Initiative | *** |
| Ocean Health Initiatives | *** |
| Opera Hactenus Inedita | *** |
| Operation HOPE Inc | *** |
| Oman Holding International | *** |
| Oman Holdings International | *** |
| Otherwise Health Impaired | *** |
| OMEGA HEALTHCARE INVS | ** |
| ORLEANS HOMEBUILDERS INC | ** |
| older hearing-impaired | ** |
| oral hygiene instructions | ** |
| open-market health insurance | ** |
| Out of Home Investigation | ** |
| Occupational Health Indicators | ** |
| Oral Health Instructions | ** |
| Oral History Institute | ** |
| Occupational Hygiene II | * |
| omega hlthcare invs | * |
| Occupational Health Institutes | * |
| Ontario Hydro International | * |
| One Happy Island | * |
| Other Healthcare Insurance | * |
| Office of Healthcare Inspections | * |
| Office of Highway Information | * |
| Open Habitats of Illinois | * |