Freyja è una divinità della mitologia norrena, dapprima della stirpe dei Vanir, ma dopo la pace che concluse il conflitto fra le due stirpi divine, viene mandata dagli Æsir come ostaggio e diviene una di loro. Ha molte manifestazioni ed è considerata la dea dell'amore, della seduzione, della fertilità, della guerra e delle virtù profetiche. È figlia di Njörðr e di Skaði, sorella di Freyr e moglie di Óðr, a causa del quale soffre le pene d'amore, dato che la lascia per intraprendere lunghi viaggi, costringendola ad infruttuosi inseguimenti, durante i quali si lascia andare a pianti di lacrime d'oro. Assieme al consorte, mette al mondo due splendide fanciulle, dai nomi emblematici: Görsimi e Hnoss, sinonimi di "tesoro". Loki la definisce una ninfomane, sempre pronta a saziare le sue voglie con qualunque tipo di partner, dai giganti agli elfi, ed in effetti il suo irrefrenabile desiderio è cantato nelle Mansöngr, letteralmente canzoni per uomini, liriche amorose, ufficialmente vietate, ma diffusissime nelle alcove. Ne parla l'Edda di Snorri che afferma che la dea ama i canti d'amore e incita gli innamorati ad invocarla; aggiunge anche che Freyja cavalca nei campi di battaglia ed ha diritto alla metà dei caduti che guiderà in battaglia durante il Ragnarök, mentre l'altra metà è del dio Odino. Alla fine della guerra fra i Vanir e gli Æsir va a vivere con il fratello fra questi ultimi. Dimora nel palazzo Sessrumnir, che significa "dalle tante sedie", che si trova in Folkvang, "campo di battaglia"; ne esce ogni giorno viaggiando su un carro scintillante tirato da due gatti (si presume di razza delle foreste norvegesi).

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Freyja (sometimes anglicized as Freya), is a major goddess in Norse Paganism, a subset of Germanic Paganism. Because the documented source of this religious tradition, the Norse Mythology, was transmitted and altered by Christian medieval historians, the actual role, pagan practices, and worship of the goddess are uncertain.
In the Eddas, Freyja is portrayed as a goddess of love, beauty, and fertility. Blonde, blue-eyed, and beautiful, Freyja is described as the fairest of all goddesses, and people prayed to her for happiness in love. She was also called on to assist childbirths and prayed to for good seasons.
Freyja was also associated with war, battle, death, magic, prophecy, and wealth. She is cited as receiving half of the dead lost in battle in her hall Fólkvangr, whereas Odin would receive the other half at Valhalla. The origin of Seid was ascribed to Freyja.
Frigg and Freyja are the two principal goddesses in Norse religion, and described as the highest amongst the Asynjur. Freyja is the goddess most honoured after or along with Frigg, and her worship seems to have been even the more prevalent and important of the two. In the Droplaugarsona Saga, it is described that in a temple at Ölvusvatn, Iceland, statues of Frigg and Freyja have been seated upon higher thrones opposite those of Thor and Yngve. These statues were arrayed in drapery and ornaments of gold and silver.
In Heimskringla, Freyja is also presented as a mythological Princess of Sweden. Her father Njörðr is seen as the second mythological King of Sweden, and her twin brother Yngve is the third.Yngve's and Freyja's mother is Njörðr's twin sister (who has been often linked to the ancient Germanic goddess Nerthus), as it is a custom of the Vanir and allowed by their laws.
Further in Heimskringla, it is written that many temples and statues of native pagan gods and goddesses were raided and destroyed by Olaf Tryggvason and Saint Olaf during the gradual and violent process of the Christianization of Scandinavia. During and after the extent that the process of Christianization was complete, Freyja and many things associated with her were demonized by the growing influence of Christian missionaries. After Christian influence was cemented in law, traces of belief went increasingly underground into mainly rural areas, surviving into modern times in Germanic folklore and most recently reconstructed to varying degrees in Germanic neopaganism.

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