In Norse mythology, Snær (Old Norse Snærr, East Norse Sniō, Latin Nix, Nivis, English "snow") is seemingly a personification of snow, appearing in extant text as an euhemerized legendary Scandinavian king.
In the Orkneyinga saga, Snow the Old (Snærr hinn gamli) is son of Frosti 'frost' son of Kári. In the account called Hversu Noregr byggdist ('How Norway was inhabited') in the Flatey Book, Snær is son of Jökul (Jǫkull 'icicle, ice, glacier') son of Kári. This Kári is lord of the wind and brother of Ægir or Hlér and Logi, all three being sons of the giant Fornjót. Fornjót is euhemerized in these traditions as king of "Gotlandi, Kænlandi and Finnlandi".
Snow's son in Orkneyinga saga and Hversu is Thorri 'frozen-snow'. The Hversu also gives Snow three daughters: Fön (Fǫnn 'Snowdrift'), Drífa 'snowfall', and Mjöl (Mjǫll, 'powdered snow'). Sturlaugs saga (section 22) brings in King Snow of Finmark and his daughter Mjöl who flies quickly through the air.
The Ynglinga saga relates how Vanlandi the ruler of Sweden visited Snow and married his daughter Drífa, but left in the spring and did not return. Drífa bore Vanlandi a son called Vísbur. See Vanlandi for further details.
The Hversu also mentions in passing, when speaking of Snær's distant descendant Halfdan the Old, that Snær's life lasted three hundred years.
Snow's son Thorri reigned as king after Snow, and had two sons named Nór and Gór and a daughter named Gói ('thin snow, track-snow'). See Nór to follow this lineage further.
A legendary Danish king named Snow (Sniō) appears in the Annales Ryensis, section 14, and in the Chronicon Lethrense, section 5, between the reigns of Helgi and Hrólf Kraki.