In demonology Saleos is a mighty Great Duke (a Great Earl to Johann Weyer) of Hell, ruling thirty legions of demons (Weyer does not mention anything concerning legions under his command). He is of a pacific nature, and causes men to love women and women to love men (Weyer does not mention the nature of his work).

He is depicted as a gallant and handsome soldier, wearing a ducal crown, and riding a crocodile.

Other spellings: Sallos, Zaleos.

See also The Lesser Key of Solomon, Ars Goetia.