In Norse mythology, Gram, also known as Balmung or Nothung, is the sword that Sigurd used to kill the dragon Fafnir. It is primarily used by the Völsungs in the Volsunga Saga. However, it is also seen in other legends, such as the Thidrekssaga in which it is wielded by Hildebrand.

Sigurd or Siegfried is a legendary hero of Germanic heroic legend, who killed a dragon—known in some Old Norse sources as Fáfnir—and who was later murdered. In both the Norse and continental Germanic tradition, Sigurd is portrayed as dying as the result of a quarrel between his wife (Gudrun/Kriemhild) and another woman, Brunhild, whom he has tricked into marrying the Burgundian king Gunnar/Gunther. His slaying of a dragon and possession of the hoard of the Nibelungen is also common to both traditions. In other respects, however, the two traditions appear to diverge. The most important works to feature Sigurd are the Nibelungenlied, the Völsunga saga, and the Poetic Edda. He also appears in numerous other works from both Germany and Scandinavia, including a series of medieval and early modern Scandinavian ballads.