| FU | Fudan University | 复旦大学 |
| FU | Fuse Unit | 保险丝装置 |
| FU | Field Unit | 字段[信息组]单元 |
| FU | Functional Unit | 功能部件 |
| FU | First Union (US east coast bank) | 第一联盟（美国东岸银行） |
| FU | Future's Unpredictable | 预测未来的 |
| FU | Fearless Unit | 无畏部队 |
| FU | Formerly Undesirable | 以前不受欢迎 |
| FU | Fluorescence Unit | 荧光单元 |
| FU | Funky Underpants | 趣味内衣 |
| FU | Frost Up | 霜冻 |
| FU | Follicular Unit | 卵泡单位 |
| FU | Firing Unit | 点火装置 |
| FU | Finlandia University | 芬兰迪亚大学 |
| FU | Friends University (Kansas) | 朋友大学（堪萨斯州） |
| FU | Fairfield University | 费尔菲尔德大学 |
| FU | Field Unit (US DoD) | 现场单位（美国国防部） |
| FU | Flamingoz Unlimited (website) | Flamingoz Unlimited（网站） |
| FU | Franklin University (Columbus, Ohio) | 富兰克林大学（俄亥俄州哥伦布） |
| FU | Functional User | 功能用户 |
| FU | Fine Used (philately) | 精细使用（集邮） |
| FU | Forward User | 转发用户 |
| FU | Freidman Unit (political slang/meme for six months) | Freidman单位(政治俚语/以6个月) |
| FU | Flight Unit | 飞行机组 |
| FU | Furman University (Greenville, SC) | 弗曼大学（南卡罗来纳州格林维尔） |
| FU | Fixture Unit (plumbing) | 固定装置（管道） |
| FU | Farmacias Unidas (Guatemala) | Farmacias Unidas（危地马拉） |
| FU | Fun University (That 70's Show) | 有趣的是,70(显示) |
| FU | Forretningsudvalg (Danish) | Forretningsudvalg（丹麦语） |
| FU | Felix Unger (The Odd Couple) | 费利克斯·昂格尔（奇怪的夫妇） |
| FU | Flows Unlimited | 流量无限制 |
| FU | Forces Unknown | 未知的力 |
| FU | First User | 第一个用户 |
| FU | Future Unit | 未来单位 |
| FU | Football United | 足球联合会 |
| FU | Forcible Union | 强制联合 |
| FU | Family Urban | 城市家庭 |
| FU | Fraction Unbound | 分数未绑定 |
| FU | Feedback Unit | 反馈单位 |
| FU | Felix Unger | 菲尔里克斯·昂格 |
| FU | Finite Union | 有限并集 |
| FU | Farmacopeia Ufficiale | 非官方农场 |
| FU | Funny Uncle | 有趣的叔叔 |
| FU | Fertilizer Use | 肥料使用 |
| FU | Future Unity | 未来的团结 |
| FU | Fart Underwater (submarine sound) | 水下放屁（海底声音） |
| FU | Fortran Unit | Fortran单元 |
| FU | Forecast Unit | 预测单位 |
| FU | Frag University | 弗拉格大学 |
| FU | Fighter Underground | 地下战斗机 |
| FU | Forget You (polite form) | 忘记你（礼貌用语） |
| FU | Future Use | 未来用途 |
| FU | Fluorouracil | 氟尿嘧啶 |
| FU | Forever United | 永远的联合 |
| FU | Flasher Unit | 闪光灯单元 |
| FU | Follow-Up | 随访 |
| FU | Freie Universität (Berlin, Germany) | Freie Universität (Berlin, Germany) |
| FU | Fisk University | 菲斯克大学 |
| FU | Fiscal Unit | 会计单位 |
| FU | Follow Up | 跟进 |
| FU | Fordham University | 福德汉姆大学 |
| FU | Florida University | 佛罗里达大学 |
| FU | Fire Unit | 消防单位 |
| FU | File Upload | 文件上载 |
| FU | Forever Unchained | 永远不受束缚 |
| FU | Freaking Ugly (polite form) | 丑得吓人（礼貌用语） |
| FU | Feati Universtiy | 费蒂大学 |
| FU | Smoke (aviation meteorology) | 烟雾（航空气象学） |
| FU | Fatih University (Istanbul, Turkey) | 法提赫大学（土耳其伊斯坦布尔） |
| FU | Foul Up (polite form) | 犯规（礼貌用语） |
| FU | Formula Unit (chemistry) | 配方单位（化学） |
| FU | Fire & Update | 火灾和更新 |
| FU | Forensic Unit | 法医股 |
| FU | Food Unit | 食品部 |
| FU | finsen's unit | 芬森(氏)单位 |
| FU | Fever of Unknown origin | 不明原因发热 |
| FU | furan | 呋喃 |
| FU | Family Unit | 家庭单元 |
| FU | fecal urobilinogen | 粪便尿胆素原 |
| FU | flux unit | 通量单位 |
| FU | fractional urinalysis | 部分尿液分析 |
| FU | Foul Up | 犯规 |
| FU | Furman University | 弗曼大学 |
| FU | Formula Unit | 公式单位 |