| Abbreviation | Definition |
|---|---|
| PBS | Production Base Support |
| PBUSE | Property Book Unit Supply Enhanced |
| PBW | Particle Beam Weapon |
| PBW | Poorly Balanced Weapon |
| PBX | Private Branch Exchange |
| PBY | Catalina, WW II Patrol Bomber |
| Pc | Cumulative Probability of detection |
| PC | Parade Commander |
| PC | Pass Certified |
| PC | Patrol Cap |
| PC | Personal Computer |
| PC | Pilot in Command |
| PC | Plate Carrier |
| PC | Politically Correct |
| PC | Postal Clerk |
| PC | Power Converter |
| PC | Preliminary Coordination |
| PC | Principals Committee |
| PC | Production Control |
| PC1 | Postal Clerk First Class |