| PARCA | PACS Administrators Registry and Certification Association 
| Others |
| PARCA | Patients Access to Responsible Care Alliance
| Others |
| PARCA | Performance Assessments and Root Cause Analyses
| Others |
| PARCA | Pixel Addressable Reconfigurable Conformal Antenna
| Others |
| PARCA | Program for Arctic Regional Climate Assessment
| Others |
| PARCA | Public Affairs Research Council of Alabama
| Others |