| Abbreviation | Definition |
|---|---|
| PJCC | Potomac Job Corps Center |
| PJE | Program for Joint Education |
| PJS | Pararescue Jumpers |
| PJTL | Pararescue Jumper Team Leader |
| PJX | Project X |
| PK | PeaceKeeper Missile |
| PK | PeaceKeeping |
| PK | Potato King |
| PK | Primary Key |
| PK | Probability of Kill |
| PKCS | Public Key Cryptographic Standard |
| PKD | Packed |
| PKD | Point, Kill, Death |
| PKE | Public Key Encryption |
| PKG | Package |
| PKG-POL | Packaged Petroleum, Oils, and Lubricants |
| PKI | Public Key Infrastructure |
| PKO | PeaceKeeping Operation |
| PKP | Purple K Powder |
| PKR | Packrat Long Range Patrol vehicle |