| FET | field effect tube | 场效应管 |
| FET | Firewall Evaluation Team | 防火墙评估团队 |
| FET | Facilities Electrical Team | 设施电气团队 |
| FET | final electroconvulsive threshold | 最终电休克阈值 |
| FET | Federal Electoral Tribunal judiciary For electoral misconducts) | 联邦选举法庭司法机构（选举不当行为） |
| FET | forced expiratory time | 强制呼气时间 |
| FET | Federal Election Tribunal | 联邦选举法庭 |
| FET | Field Engineering Team | 现场工程团队 |
| FET | Frozen Embryo Transfer | 冷冻胚胎移植 |
| FET | Functional Equivalency Testing | 功能等效性测试 |
| FET | Further Education And Training | 继续教育和培训 |
| FET | Facilities Engineering Team | 设施工程团队 |
| FET | Falange Española Tradicionalista | Falange Española Tradicionalista |
| FET | Flowline End Termination | 出油管末端终端 |
| FET | Foreign Economic Trends | 国外经济趋势 |
| FET | Foundation on Economic Trends | 经济趋势基金会 |
| FET | Forsvarets Efterretningstjeneste (Danish Defense Intelligence Agency) | Forsvarets Efterretningstjeneste（丹麦国防情报局） |
| FET | Follow-on Equipment Training | 后续设备培训 |
| FET | Familial Essential Tremor | 家族性原发性震颤 |
| FET | Field Engineering Training | 现场工程培训 |
| FET | Federal Excise Tax | 联邦货物税 |
| FET | Flaming Eternity (Yu-Gi-Oh! Cards) | 燃烧的永恒（Yu Gi Oh！纸牌） |
| FET | Further Education and Training (RSA) | 继续教育和培训（RSA） |
| FET | Field-Effect Transistor | 场效应晶体管 |
| FET | Functional Equipment Transfer | 功能设备转移 |
| FET | Field Effect Transistor | 场效应晶体管 |
| FET | Full Expertise Team | 全面专业团队 |
| FET | FICS Ethics Test | FICS道德测试 |
| FET | Future and Emerging Technologies | 未来和新兴技术 |
| FET | Fighter Engine Team | 战斗机发动机组 |
| FET | Frozen Embryo Transfer (fertility treatment) | 冷冻胚胎移植（生育治疗） |
| FET | Falange Española Tradicionalista (Spanish political party) | Falange Española Tradicionalista (Spanish political party) |
| FET | FarEastTone | 远东音调 |
| FET | Fleet Evaluation Trial | 车队评估试验 |