What is the name of the world tree in Norse mythology?

The world tree in Norse mythology is Yggdrasil.

Yggdrasil is an immense, sacred ash tree at the center of Norse cosmology. The Nine Worlds are associated with it, and the gods are said to gather beneath its branches for their assemblies. Its three great roots reach toward important wells and springs: Urðarbrunnr, Hvergelmir, and Mímisbrunnr.

The tree is home to several memorable creatures, including the dragon Níðhöggr, the squirrel Ratatoskr, a hawk, and four stags that feed on its foliage. A common mix-up is treating Yggdrasil as simply a location; in the surviving myths, it is a living cosmic structure connecting different realms.

The name is commonly interpreted as “Odin’s horse,” a poetic reference to the gallows, because Odin once hung himself from a tree while seeking knowledge of the runes. The exact etymology remains debated, but Yggdrasil is the standard quiz answer for the Norse world tree.