As in the case of other modern Arthuriana, Le Morte d'Arthur is the dominant source today. Sklar noted in 1992: 'Currently a cornerstone of the new Arthurian mythos, occupies a secure position in the contemporary Arthurian pantheon, as familiar a figure to modern enthusiasts as Merlin, Lancelot, or King Arthur himself.' Additionally, she has become an archetype serving as a source of tropes for many characters in other modern works, some of them borrowing her name in the form Morgana.

Morgan le Fay has become ubiquitous in Arthurian works of modern culture, spanning mostly fantasy and historical fiction across various mediums including literature, comics, film, and television. Some other Arthurian fiction, however, casts Morgana in the various positive or at least more ambivalent roles, and some have her as a protagonist and sometimes a narrator. Examples of modern Arthurian works featuring Morgana in a role a major antagonist include characters in both the DC Comics ( Morgaine le Fey) and Marvel Comics ( Morgan le Fay) comic book universes.

Contemporary interpretations of the Arthurian myth sometimes assign to Morgana the role of seducing Arthur and giving birth to the wicked knight Mordred, though traditionally his mother was Morgause, Morgana's sister in these works Mordred is often her pawn, used to bring about the end of the Arthurian age. Her stereotypical image, then, is of a seductive, megalomaniacal, power-hungry sorceress who wishes to rule Camelot and overthrow King Arthur, and is a fierce rival of the mage Merlin. Her manifestations and the roles given to her by modern authors vary greatly, but typically she is being portrayed as a villainess associated with Mordred.

Some modern stories merge Morgana's character with her sister Morgause or with aspects of Nimue (the Lady of the Lake). The Matter of Britain character Morgan le Fay (often known as Morgana, and sometimes also as Morgaine and other names) has been featured many times in various works of modern culture, often but not always appearing in villainous roles. Morgana Le Fay, Anikó Salamon's art for the video game King Arthur II: The Role-Playing Wargame (2012)

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