The Book of the Faiyum is an ancient Egyptian "local monograph" celebrating the Faiyum region of Egypt and its patron deity, the crocodile god Sobek. It has also been classified generically as a "cult topographical priestly manual." The text is known from multiple sources dating to Ptolemaic and Roman Egypt (332 BCE – 359 CE). It primarily functioned as a mythologized map of the Faiyum.