Proto-Celtic paganism was the beliefs of the speakers of Proto-Celtic and includes topics such as the mythology, legendry, folk tales, and folk beliefs of early Celtic culture. By way of the comparative method, Celtic philologists, a variety of historical linguists, have proposed reconstructions of entities, locations, and concepts with various levels of security in early Celtic folklore and mythology (reconstructions are indicated by the presence of an asterisk). The present article includes both reconstructed forms and proposed motifs from the early Celtic period.