Artemidorus has long been recognized as an important source for epiphany-dreams, local Greek cult-practices, and ideas about the Greek pantheon. This chapter serves as a companion to his account of dreams about the gods in Book 2 of the Oneirocritica, with extended discussion of his classification of the gods (intelligible and sensible; ethereal, celestial, terrestrial, marine, subterranean, encircling), his curious lack of interest in deities outside the ‘standard’ Greek pantheon (including most local Anatolian deities), and his views on the alleged divine origin of dreams. His attitude towards incubation-sanctuaries seems to have been ambivalent at best, for what may have been rather practical professional reasons.