Look up Jörmungandr in Wiktionary, the free dictionary.
Jörmungandr or Jormungandr can refer to:
- Jörmungandr, a giant sea serpent in Norse mythology
- Jormungand from Marvel Comics, also known as the Midgard Serpent (Marvel Comics)
- Jormungandr, a genus of fossil mosasaurs with only one member, Jormungandr walhallaensis
- Joermungandr, a genus of fossil tetrapods with only one member, Joermungandr bolti
- Jormungand (manga), a manga series