HOI or Hoi may refer to:

  • Hearts of Iron, a 2002 computer game
  • Home insurance or homeowners insurance
  • Hypoiodous acid, chemical formula HOI
  • Hoi District, Aichi, a former district of Japan
  • Hoxnian geological stage, HOI is sub-stage I
  • Carsten Høi (born 1957), Danish chess Grandmaster
  • Hao Airport IATA code
  • Hoi (video game), a 1992 video game for the Amiga


"We long to be here for a purpose, even though, despite much self-deception, none is evident."
Carl Sagan
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