| PERN | Population-Environment Research Network | 人口环境研究网络 |
| PERN | Parallel Earth, Resources Negligible (Dragonriders of Pern) | 平行地球，资源可忽略不计（珀恩的龙骑） |
| PERN | Planet Earthlike, Resources Negligible | 类地行星，资源可忽略不计 |
| PERN | Parallel Earth Resources Negligible | 平行地球资源可忽略不计 |
| PERN | Preliminary Engineering Release Notice | 初步工程发布通知 |