A snake person is a half-human, half-serpent monster most often depicted with the upper torso of a human and the lower half that of a snake. Common snake people subtypes are Lamias and Nagas.

Lamia origins are rooted in Greek mythology, where she is a mistress of the god Zeus, causing Zeus' jealous wife, Hera, to kill all of Lamia's children and transform her into a monster that hunts and devours the children of others.

Nagas come from Hinduism and are a very diverse group of snake-related entities, ranging from nature spirits to gods, that reside in the netherworld and can occasionally take human or part-human form.