What is the name of Thor's war hammer?

Thor’s war hammer is called Mjolnir, commonly written with the Old Norse diacritic as Mjölnir. In Norse mythology, it is Thor’s principal weapon and a symbol of protection, thunder, and divine power.

The hammer appears in medieval sources including the Poetic Edda and Prose Edda, which were recorded in the 13th century. Stories describe it as returning to Thor’s hand after being thrown and as being used not only to fight giants but also to bless, hallow, and even revive Thor’s goats.

A famous myth explains why Mjolnir has a short handle: Loki interfered while dwarven smiths were forging it, distracting the bellows operator. The name’s deeper etymology is disputed, with proposed connections to lightning, snow, and grinding. Marvel’s version keeps the name and enchanted return but adds the familiar worthiness enchantment.