sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| One Cancels the Other | **** |
| Orange County Open | **** |
| Order Cancel Order | **** |
| Organizing Committee Office | **** |
| Office of Community Outreach | **** |
| ONE CANCELS OTHER | **** |
| Orange County Online | **** |
| Olympia Chamber Orchestra | **** |
| Of the Customer | *** |
| Order Cancels Order | *** |
| One Cancel Other | *** |
| On Campus Outreach | *** |
| Oceania Customs Organisation | *** |
| Oswego County Opportunities | *** |
| Oakland Community Organizations | *** |
| Orthodox Christian Outreach | *** |
| Office of Communications and Outreach | *** |
| Operation Community Outreach | *** |
| Open Close Open | *** |
| Orange County Organizer | ** |
| Organic Council of Ontario | ** |
| Office of Contract Oversight | ** |
| Oceania Customs Organization | ** |
| Online College of Oklahoma | ** |
| Office Chief of Ordnance | ** |
| Office of Cofinancing Operations | ** |
| Ophthalmic Clinical Officer | ** |
| Oregon Center for Optics | ** |
| Oromo Community Organization | ** |
| Ondernerings Club Opglabbeek | ** |
| Oman Charitable Organization | ** |
| Oxygen Consuming Organics | ** |
| Office of the Chief of Ordnance | ** |
| Office of Climate Observations | ** |
| ontario capital opportunities | ** |
| Ohio Consent Order | ** |
| Office of Correctional Operations | ** |
| Online Career Office | * |
| Overall Cost of Ownership | * |
| Operations Control Office | * |
| Orthopaedic Clinical Officers | * |
| Oceanic Conservation Organization | * |
| Orange Coast Optimist | * |
| Organizational Capability Office | * |
| Operational Capability Objective | * |
| Officer Commanding Operations | * |
| offload control officer | * |
| Oakland Californias Official | * |
| Oberlin College Observer | * |
| Odumegwu Chukwumeka Ojukwu | * |
| Office of Civil Operations | * |
| Oldenburg Carl von Ossietzky | * |
| Oncocamp Clfnica de Oncologia | * |
| Orobona Carolynne Ofiranet | * |
| OS on the Council | * |
| Other Change in Operations | * |
| Owning Contracting Officer | * |