| Rank | Abbreviation | Meaning |
|---|
| ***** | PCAA | Paediatric Continence Association of Australia
| |
| ***** | PCAA | Philippine Clean Air Act
| |
| ***** | PCAA | Palliative Care Association of Alberta
| |
| ***** | PCAA | Progressive Conservative Association of Alberta
| |
| ***** | PCAA | Palau Community Action Agency
| |
| **** | PCAA | Precast Concrete Association of America
| |
| **** | PCAA | Pitt County Anesthesia Associates
| |
| **** | PCAA | Philippine Chinese Association of America
| |
| **** | PCAA | Prevent Child Abuse America
| |
| *** | PCAA | Parallel Computing Algorithms and Applications
| |
| *** | PCAA | phenylimide of cis-aconitic acid
| |
| *** | PCAA | Pacific Coast Athletic Association
| |
| *** | PCAA | Pineville Community Athletic Association
| |
| *** | PCAA | Pancreatic Cancer-Associated Antigen
| |
| *** | PCAA | Pre-Cast Concrete Association of America
| |
| *** | PCAA | Parks Canada Agency Act
| |
| *** | PCAA | Probation Community Action Association
| |
| ** | PCAA | Parking Company America Airports
| |
| ** | PCAA | Particulate Combined Amino Acids
| |
| ** | PCAA | Parish Councils Airport Association
| |
| ** | PCAA | Prevention of Cruelty to Animals Act
| |
| ** | PCAA | Pancreas Cancer Associated Antigen
| |
| ** | PCAA | Penicuik Community Arts Association
| |
| ** | PCAA | Polymorphous Cognitive Agent Architecture
| |
| * | PCAA | Prescott College Alumni Association
| |