HU, Hu or hu may refer to:

  • .hu, the Internet country code top-level domain for Hungary
  • Hu (digraph), used primarily in Classical Nahuatl
  • Hu (vessel), a type of ancient Chinese bronze vessel
  • Fu (kana), also romanised as Hu, Japanese kana ふ and フ
  • Hungarian language, ISO 639 alpha-2, hu
  • Hainan Airlines, from their IATA airline code
  • Hollywood Undead, an American rap rock band
  • Holographic Universe, in quantum gravity and string theories
  • Hounsfield Units, on the Hounsfield scale, a unit of measurement used on a computed tomography machine (CAT)
  • Wu Hu, an ancient Chinese term for five nomadic tribes surrounding ancient China

Read more about Hu:  People, Mythology and Religion, Places, Education