This thesis gives an overview of the most usually present demonological beings in croatian traditional culture. The main material are croatian folk tales and legends about witches, devils, werewolves, wolves, snakes, plague, and other demonological creatures. The thesis starts with describing the main characteristics of oral literature and then explaining the main concepts. After that, a short description of all the creatures that make up the group of demonological beings is given. Particular emphasis is placed on witches. Witches are the the most represented demonological being in croatian oral stories. The central and the main part of the thesis is my division of demonological beings. After I investigated how often are they represented in literature, I divided them into three groups. That is the group of witches, the group of devils and the group of other creatures whose key features I wrote. The thesis concludes with writing several tales of native informants about demonological beings in Split.