In Norse mythology, Glasir (Old Norse "gleaming") is a tree or grove, described as "the most beautiful among gods and men", bearing golden leaves located in the realm of Asgard, outside the doors of Valhalla. Glasir is attested in the 13th century Prose Edda book Skáldskaparmál where it receives three mentions, one of which mentions its location and all of which focus on the golden leaves of the tree. Glasislundr (Old Norse "Glasir's Grove") appears in the Poetic Edda poem Helgakviða Hjörvarðssonar.

In Norse mythology, Glasir (Old Norse "gleaming") is a tree or grove, described as "the most beautiful among gods and men", bearing golden leaves located in the realm of Asgard, outside the doors of Valhalla. Glasir is attested in the 13th century Prose Edda book Skáldskaparmál where it receives three mentions, one of which mentions its location and all of which focus on the golden leaves of the tree. Glasislundr (Old Norse "Glasir's Grove") appears in the Poetic Edda poem Helgakviða Hjörvarðssonar.