| PCAC | Pacific Coast Athletic Conference 
| Others |
| PCAC | Parker Center Animal Clinic
| Others |
| PCAC | Parking Citation Assistance Center
| Others |
| PCAC | Partial Conserved Axial Currents
| Others |
| PCAC | Partially Conserved Axial Current
| Others |
| PCAC | Partners for Clean Air Coalition
| Others |
| PCAC | Pasadena Community Access Corporation
| Others |
| PCAC | Paul Creative Arts Center
| Others |
| PCAC | Penn Charter Aquatic Club
| Others |
| PCAC | Pennsylania College Advising Corps
| Others |
| PCAC | Pennsylvania College Advising Corps
| Others |
| PCAC | Pennsylvania College Application Campaign
| Others |
| PCAC | People's Community Action Corporation
| Others |
| PCAC | Pepperdine Colleges Against Cancer
| Others |
| PCAC | Permanent Citizens Advisory Committee
| Others |
| PCAC | Personnel Certification Accreditation Committee
| Others |
| PCAC | Pharmacy Compounding Advisory Committee
| Others |
| PCAC | Pike County Arts and Crafts
| Others |
| PCAC | Placer Community Action Council
| Others |
| PCAC | Plano Chinese Alliance Church
| Others |
| PCAC | Pleasanton Cultural Arts Council
| Others |
| PCAC | Plymouth Community Arts Council
| Others |
| PCAC | Police Commissioners Association of Connecticut
| Others |
| PCAC | Pony Community Activity Centers
| Others |
| PCAC | Port Community Advisory Committee
| Others |
| PCAC | Primary Care Associates of California
| Others |
| PCAC | Primary Control and Analysis Center
| Others |
| PCAC | Privatization and Competition Advisory Committee
| Others |
| PCAC | Programa Campesino a Campesino
| Others |
| PCAC | The Power Cost Adjustment Clause
| Others |