| Abbreviation | Definition |
|---|---|
| PCTA | Perry County Transportation Authority |
| PCV | Passenger Carrying Vehicle |
| PCV | Passenger Carrying Vehicles |
| PCV | Positive Crankcase Ventilation |
| PD | Paris Dakar |
| PD | Pre-Delivery |
| PD | Pump Diesel |
| PD | Pumpe Duse |
| PDAR | Preferential Departure and Arrival Route |
| PDC | Port of Duqm Company (Duqm, Oman) |
| PDC | Pre - Departure Clearance |
| PDOT | Pennsylvania Department of Transportation |
| PDOT | Portland Department of Transportation |
| PDR | Paintless Dent Removal |
| PDR | Preferential Departure Route |
| PDTA | Pee Dee Transportation Association |
| PDX | Portland International Airport |
| PEEMP | Polish Energy-Efficient Motors Programme |
| PEGASUS | People, Goods, and Services Urban System |
| PEK | Peripheral Engine Evaluation Kit |