In Norse mythology, Dvalinn is a dwarf who appears in several Old Norse tales and kennings. The name translates as "the dormant one" or "the one slumbering" (akin to the Danish and Norwegian "dvale" and Swedish "dvala", meaning "sleep", "unconscious condition" or "hibernation"). Dvalin is listed as one of the four stags of Yggdrasill in both Grímnismál from the Poetic Edda and Gylfaginning from the Prose Edda.
In the Poetic Edda poem Völuspá, Dvalin is mentioned as a name in the listing of dwarves, and again in a later stanza as a leader taking a host of dwarves from the mountains to find a new dwelling place:
In Hávamál, Dvalin is said to have introduced the writing of runes to the dwarves, as Dain had done for the elves and Odin for the gods.
In Alvíssmál, a kenning for the sun is listed as the "deceiver of Dvalin", referring to the sun's power of turning dwarves into stone. In skaldic poetry, "Dvalin's drink" is used as a kenning for poetry, since the mead of poetry was originally created by the dwarves.
In Fáfnismál, during a discussion between Sigurd and Fafnir concerning the minor Norns (apart from the three great Norns), those who govern the lives and destinies of dwarves are also known as "Dvalin's daughters".