sort by Rank | Alpha
| Possible Meanings | Rank |
| A Petition for Clarification | **** |
| Air Pollution Control Ordinance | *** |
| Association of Police Chief Officers | *** |
| Association of Pleasure Craft Operators | *** |
| Association of Public Communications Officials | *** |
| Air Pollution Control Officers | *** |
| Association of Professional Communications Officers | ** |
| Association of Public Communications Officers | ** |
| Association of Police Communications Officers | ** |
| Animal Protection and Control Office | ** |
| Anticline Petroleum Consultancy Office | ** |
| Association of PublicSafety Communications Officials | ** |
| Association of Public Communication Officers | * |
| Animal Protection Control Office | * |
| Advanced Process Control and Optimization | * |
| African Peoples Christian Organization | * |
| Association of Pleasure Craft Owners | * |
| Associated Public Communications Officer | * |