Pseudo-Geber ("false Geber") is the name assigned by modern scholars to an anonymous alchemist born in the 14th century, probably in Spain. He wrote a few books on alchemy and metallurgy, in Latin, under the pen name of Geber (Jabir ibn Hayyan), the 8th century Islamic alchemist of the same name.
Books by the real Jabir Ibn Hayyan had been translated into Latin during the 11th to 13th centuries, and had made a profound impression on European alchemists. Pseudo-Geber probably adopted the name of his illustrious predecessor in order to capitalize on his reputation. In any case, Pseudo-Geber's work reflects 14th century European alchemical practices rather than earlier Arabic ones.