Fu may refer to:
- Fu (surname), a common pronunciation for some Chinese surnames, such as 傅, 符, 付, 扶, 伏, 富, etc.
- Fu (poetry), a Chinese genre of rhymed prose
- Fu (tally), ancient Chinese item
- Fu (kana), a symbol in Japanese syllabaries
- Fu County, in Shaanxi, China
- Fu River (disambiguation), the name of several rivers in China (Fuhe, Fujiang, Fushui)
- Fu, Fasilitator Universiti, Universiti Putra Malaysia
- Fu Foundation School of Engineering and Applied Science
- Fu, Nepal
- Fu, a type of prepared wheat gluten in Japanese cuisine
- Fu, a prefecture-level administrative subdivision in Japan and ancient China (see Zhou (country subdivision).
- Fǔ, a type of ancient Chinese vessel
- Fu Manchu, a fictional character first featured in a series of novels by English author Sax Rohmer
- Fu Manchu moustache, a full mustache popularized by the character
- Fu Lu Shou
- Fu Character
- Marco Fu, Hong Kong snooker player
- Shaq Fu video game
FU, F.U., F U, or F u may refer to:
- Abbreviation of Fuck you
- Abbreviation of formula unit in chemistry
- FU, an alternate name for a standing fireman's carry takeover, now known as the Attitude Adjustment (AA)
- FU, a fixture unit, equal to one cubic foot of water per minute
- FU, a fibrinolytic unit, a dosage measure for the breakdown of fibrin
- FU, a functional unit, part of a CPU that performs the operations and calculations
- F.U. Don't Take It Personal, the debut studio album from American hip hop group Fu-Schnickens
- F.U. EP, an EP by Gob
- Fed-Up Party, a joke political party ran by Ed the Sock during the Canadian federal election, 2011.
- Fairfield University, United States
- Finlandia University, United States
- Fordham University, United States
- Franklin University, United States
- Free University of Berlin, Germany
- Furman University, United States
- Alternate name for the song Fuck You!, by Cee Lo Green