Mu (Korean: 무) is the Korean term for a shaman in Korean shamanism. Korean shamans hold rituals called gut for the welfare of the individuals and society.
In modern Korea different terms are used to define shamans, including mudang (mostly for females), baksu (only for males), tangol (for hereditary shamans), and musogin ("people who do shamanism", used in the context of organised shamanism).
Korean mythology (Korean: 한국 신화; Hanja: 韓國神話) is the group of myths told by historical and modern Koreans. There are two types: the written, literary mythology in traditional histories, mostly about the founding monarchs of various historical kingdoms, and the much larger and more diverse oral mythology, mostly narratives sung by shamans or priestesses (mansin) in rituals invoking the gods and which are still considered sacred today.
The historicized state-foundation myths representing the bulk of the literary mythology are preserved in Hanja literary works such as Samguk sagi and Samguk yusa. One state's foundation myth, that of the first Korean kingdom of Gojoseon by legendary king Dangun, has become the founding myth of the whole Korean nation. State-foundation myths are further divided into northern, such as that of the kingdom of Goguryeo and its founder Jumong, where the founder is the son of a celestial male figure and an earthly female figure, and southern, such as that of the kingdom of Silla and its founder Hyeokgeose, where the founder begins as an object descended from the heavens, and himself marries an earthly woman. Other literary myths include the origin myths of family lineages recorded in genealogies.