Sigenot is a Middle High German poem, composed no later than 1300, and probably developed in the Swabian-Alemanic dialect area. Its subject matter is the encounter and combat of Dietrich of Bern (Theoderic) with the eponymous giant Sigenot.
The poem exists in two versions: the so-called elder Sigenot (älterer Sigenot), which is very short and probably represents shortened version of a longer text which is also the basis of the younger Sigenot (jüngerer Sigenot).
In the älterer Sigenot, Dietrich awakens the giant Sigenot in the forest by kicking him. The giant then recognizes Dietrich as the slayer of Hilde and Grim, two giant relatives of his, and forces Dietrich to fight him, despite a sudden reluctance (zagheit) on Dietrich's part. Dietrich is thrown into a dungeon. Sigenot now heads to Verona to defeat Hildebrand, and, encountering him in the forest, takes him prisoner as well. However, once Hildebrand has been dragged to Dietrich's prison, he is able to free himself, slays the giant and frees Dietrich with the help of the dwarf Eggerich. The two heroes then return to Verona.
The jüngerer Sigenot adds a beginning in which Hildebrand tells Dietrich about Sigenot and warns him not to go into the forest to fight the giant. Then, before encountering the giant, Dietrich fights a wild man who is keeping the dwarf Baldung captive. As a reward, the dwarf gives Dietrich a protective jewel and directs him to Sigenot. Dietrich fights Sigenot and is taken prisoner. Sigenot throws Dietrich into a snake pit, but the jewel protects him. Hildebrand, now worried by Dietrich's long absence, sets out to find him: on the way he encounters Sigenot and is taken prisoner. Left alone, Hildebrand frees himself and dresses in Dietrich's armor. He then slays Sigenot and frees Dietrich with Eggerich's help.
The poem may connect to Dietrich's captivity among giants, as referenced in the Waldere: Heinzle suggests that it was created in the 13th century under the influence of this traditional story. The text also makes reference to Dietrich's battle with Hilde and Grim, which is told in the Thidrekssaga and referenced in the Eckenlied, but about which no poem survives.