| Acronym | Definition |
|---|
| PENS | Pittsburgh Penguins (NHL team) |
| PENS | Politeknik Elektronika Negeri Surabaya (Indonesian: Electronic Engineering Polytechnic Institute of Surabaya; Surabaya, Indonesia) |
| PENS | percutaneous electrical nerve stimulation |
| PENS | Pediatric Endocrinology Nursing Society |
| PENS | Partido Español Nacional Socialista (Spanish Nazi Group) |
| PENS | Package Exchange Notification System (e-learning standard) |
| PENS | Police E-Mail Notification System |
| PENS | Policy Enrollment & Notification System (US Army G-4) |
| PENS | Parallel Euler Navier-Stokes Solver |