| Acronym | Definition |
|---|
| PERN➣Population-Environment Research Network |
| PERN➣Pakistan Education and Research Network |
| PERN➣Performance Equine Rescue Network (Greenwood, CA) |
| PERN➣Packaging Export Recovery Note (packaging waste; UK) |
| PERN➣Parallel Earth, Resources Negligible (Dragonriders of Pern) |
| PERN➣Planet Earthlike, Resources Negligible |