| Abbreviation | Definition |
|---|---|
| PDRS | Private Dispute Resolution Service |
| PDS | Phoenix Dentsu Starcom |
| PDSI | Plant Development Services Inc |
| PDSI | Professional Data Systems Inc |
| PDSI | Project Development Services Inc |
| PDV | Precision Data Ventures, Ltd. |
| PDVSA | Petróleos de Venezuela, S.A. |
| PDWC | P D Whitehead and Company |
| PDY | Planning Dynamics, Inc. |
| PE | Planning Engineer |
| PEC | Pacific Eye Clinic |
| PEC | Petrolimex Engineering Joint Stock Company |
| PEC | Process Engineering Corporation |
| PEC | Product Engineering Corporation |
| PECC | Precision Engine Controls Corporation |
| PECS | Prasads Engineering and Computing Solutions |
| PEE | Pacific Eagle Equities |
| PEECC | Philconstruct Events Exhibitions and Conferences Corp |
| PEECC | Philconstruct Events Exhibitions and Conferences Corporation |
| PEEI | Pittsburgh Electric Engines Inc |