Halys may refer to:

  • Health-adjusted life years (HALYs), a type of disability-adjusted life year which are used in attempts to quantify the burden of disease or disability in populations
  • Halys River, a western name for the Kızılırmak River (Turkish: "Red River") in Anatolia
  • Halys (bug), a genus of stink bugs
  • A taxonomic synonym for the genus Gloydius, also known as Asian moccasin snakes, a group of venomous pitvipers found in Asia
    • Gloydius halys, also known by the names Halys viper and Halys pit viper
  • Quentin Halys (born 1996), French tennis player

See also

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