| Abbreviation | Definition |
|---|---|
| PITS | Program Information Tracking System |
| PIU | Programming Investigation Unit |
| PKO | PeaceKeeping Operations |
| PKP | Public Key Partners |
| PKPA | Parental Kidnapping Prevention Act |
| PKS | Parks |
| PL | Perfect Liberty |
| PL | President's List |
| PL | Public Law |
| PLA | People's Liberation Army |
| PLA | Project Labor Agreement |
| PLLI | National Institute on Postsecondary Education, Libraries, and Lifelong Learning |
| PLUS | Parental Loan for Undergraduate Student |
| PLZ | Plaza |
| PM | Planning Meeting |
| PM | Pollution Minimum |
| PM | Priority Mail |
| PMA | Premarket Approval |
| PMA | PRE-MARKET APPROVAL |
| PMA | Premarket Approval Application |