In Norse mythology, a fylgja (Old Norse, literally "someone that accompanies," plural fylgjur) is a supernatural being or creature which accompanies a person in connection to their fate or fortune. Fylgjur usually appear in the form of an animal and commonly appear during sleep, but the sagas relate that they could appear while a person is awake as well, and that seeing one's fylgja is an omen of one's impending death. However, when fylgjur appear in the form of women, they are then supposedly guardian spirits for people or clans (ættir).
- Anima and animus
- Familiar spirit
- Fetch (folklore)
- Holy Guardian Angel
- Kellog, various (2001:745).
- Orchard (1997:73) and Simek (2007:129).
- Kellog, Robert (Introduction). Smiley, Jane (Introduction). Various (2001). The Sagas of Icelanders. Penguin Group. ISBN 0-14-100003-1
- Orchard, Andy (1997). Dictionary of Norse Myth and Legend. Cassell. ISBN 0-304-34520-2
- Simek, Rudolf (2007) translated by Angela Hall. Dictionary of Northern Mythology. D.S. Brewer. ISBN 0-85991-513-1