sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Office of Alcohol Policy and Coordination | ** |
| Optical Automatic Power Control | ** |
| Oklahoma Association of Personnel Consultants | * |
| Organotin Antifoulant Paint Control | * |
| Ottawa Alpha Promotion Committee | * |
| Office Automation and Personal Computer | * |
| Operational Area Planning Committee | * |
| Online Adobe Photoshop Course | * |