| FESS | Funabashi English Speaking Society | 船桥英语协会 |
| FESS | Facilities and Equipment Support Services | 设施和设备支持服务 |
| FESS | Fire Emblem Sanctuary of Strategy (forum) | 火徽战略圣殿（论坛） |
| FESS | Facilities Engineering Supply System | 设施工程补给系统 |
| FESS | Flywheel Energy Storage System | 飞轮储能系统 |
| FESS | Functional Endoscopic Sinus Surgery | 镜鼻窦手术 |