In demonology Gremory is a strong Duke of Hell that governs twenty-six legions of demons. He tells all things past, present and future, about hidden treasures, and procures the love of women, young and old, but especially maidens.

He is depicted as appearing in the form of a beautiful woman with the crown of a duchess tied around her waist, and riding a camel.

Other spellings: Gamory, Gemory, Gomory.

See also The Lesser Key of Solomon, Ars Goetia.