HEI may refer to:

Companies and organizations edit

In education edit

In language edit

Places edit

In science and technology edit

Other uses edit

  • Hei (album), 2015 album by Norwegian duo Marcus & Martinus
  • Hei (Darker than Black), protagonist of the 2007 anime
  • Qi, in traditional Chinese culture, a principle forming part of any living thing (Cantonese: hei)

See also edit