The sagas (from Icelandic saga, plural sögur), are stories about ancient Scandinavian and Germanic history, about early Viking voyages, about migration to Iceland, and of feuds between Icelandic families. They were written in the Old Norse language, mainly in Iceland.

The texts are epic tales in prose, often with stanzas or whole poems in alliterative verse embedded in the text, of heroic deeds of days long gone, tales of worthy men, who were often Vikings, sometimes Pagan, sometimes Christian. The tales are usually realistic, except legendary sagas, sagas of saints, sagas of bishops and translated or recomposed romances. They are sometimes romanticised and fantastic, but always dealing with human beings one can understand.