An edition, with stanza-by-stanza commentary and translation, of the late-medieval Icelandic rímur cycle þrymlur, which is based on the story of the Eddic poem þrymskviða, in which the god þórr disguises himself as the goddess Freyja to retrieve his stolen hammer from the giants. An extensive introduction examines the relationship between these poems as well as ballad analogues, and gives an account of the poetics of þrymlur and the rímur genre in general. A glossary is provided.