| Abbreviation | Definition |
|---|---|
| PEC | Professional Education Center |
| PEC | Program Element Code |
| PECK | Patient Evacuation Contingency Kit |
| PECOD | Program Element Code |
| PECP | Precision Engagement Collaboration Process |
| PED | Processing, Exploitation, Dissemination |
| PED | Program Entry Device |
| PEDB | Planning and Execution Database |
| PEER | Program for Escape, Evacuation, and Rescue |
| PEG | Program Evaluation Group |
| PEGEO | Personnel Geographic Location |
| PEI | Principal End Item |
| PEKKA | Powerful and Enlarge Knight killing Army |
| PELS | Precision Emitter Location System |
| PEM | Program Element Monitor |
| PEMM | Provisional Enrolled Missouri Militia |
| PEMR | Pennsylvania Emergency Militia Regiment |
| PENAIDS | Penetration Aids |
| PENT | The Pentagon |
| PENTENG | Pentagon English |