This volume opens a four-volume edition of field materials on folk demonology from Ukrainian and Belarusian Polesie, as well as the adjacent southern Russian regions. The book contains an extensive corpus of mythological texts, recorded in the 80-90s, published for the first time. XX century Polesie expedition. The presented materials are provided with detailed scientific commentary and reference materials. The first volume of "Folk Demonology of Polesie" includes texts containing beliefs about people with demonic properties: a witch, a sorcerer, a sorceress, a healer, "knowing ones", a werewolf, as well as about one of the most characteristic results of the harmful activities of witches and sorcerers - the crease.< /p>