| Abbreviation | Definition |
|---|---|
| PA | ennsylvania |
| PA | Pennsylvania |
| PACS | Provisional Army of the Confederate States |
| PBR | Professional Bull Riders |
| PCUS | Presbyterian Church in the United States |
| PD | Port Deposit, Maryland |
| PEPS | Projected Entangled Pair States |
| PG | Prince George's (County, Maryland) |
| PGC | Prince Georges County, Maryland |
| PGH | Pittsburgh, Pennsylvania |
| PJM | Pennsylvania, Jersey, and Maryland |
| PLOTUS | Poet Laureate of the United States |
| PMB | Pietermaritzburg |
| PMLB | Parks Make Life Better |
| PO | Portland, Oregon |
| PON | Pontiac, Michigan |
| PONY | Pennsylvania, Ohio, New York |
| POTUS | People of the United States |
| PR | Puerto Rico |
| PR | uerto Rico |