Abstract
This publication revealed the phenomenon of representations of evil spirits in Orthodoxy and Catholicism. The necessity of consideration of the phenomenon as an interdisciplinary synthesis of work on religion, philosophy, theology, mythology, culture, history and ethnic psychology. Consider the views of Western experts and the state of the problem in Ukraine. Analytical review of the literature on the problems investigated allowed to select the structural elements of demonology. The author noted the similarity of representations of evil spirits in Orthodoxy and Catholicism, confirming the conclusions of well-known experts.