| Abbreviation | Definition |
|---|---|
| P.S.I. | Pressure Systems International |
| PA | Physical Agents |
| PA | Professional Association |
| PAA | Pennsylvania Automotive Association |
| PAAF | Property Appraisers' Association of Florida, Inc. |
| PAAS | Pharmacy Audit Assistance Service |
| PAC | Penske Auto Centers |
| PAC | Performance Advantage Company |
| PAC | Phillips, Alexander, and Clemens |
| PACE | Photographers At The Creative Edge |
| PACL | Pearls Agrotech Corporation Limited |
| PACL | Prudential Assurance Company Ltd |
| PACL | punjab alkalies chemicals ltd |
| PACS | Professional Analytical and Consulting Services |
| PACT | Project Alert Computer Technology |
| PADC | Pennsylvania Avenue Development Corporation |
| PADC | Philippine Aerospace Development Corporation |
| PADC | Prince Albert Development Corporation |
| PADL | Architectural Design CO LTD |
| PADO | Print And Design Online |