YU or Yu may stand for:

• Henan, abbreviation for the Chinese province
• Yugoslavia, especially,
  • Socialist Federal Republic of Yugoslavia (old ISO country code)
• Yu (Xia dynasty ruler), the founder of the Xia dynasty
• Yu (Stargate), a System Lord from the science fiction series Stargate SG-1
• Yu (Cyrillic), a letter in the Cyrillic alphabet

Universities

• Yale University
• Yeshiva University
• York University

Shows

• Yu-Gi-Oh!
• Yu Yu Hakusho

Instruments

• Yu (percussion instrument), an ancient Chinese musical instrument in a shape of a tiger with a serrated back, played by running a stick through the serration, used to mark section endings
• Yu (wind instrument), an ancient Chinese free-reed mouth organ, larger than the Sheng (instrument)

Chinese given name

• The moral philosopher, Jiyuan Yu
• Fictional characters (Yū)
  • Yuu Matsuura in Marmalade Boy
  • Yu Komori in The Manga

YU | YU | YU