The Unwritten Literary World of Tribal Communities is nothing but the Oral Literature or Folklore. It covers stories, legends, myths, song, dances, riddles, proverbs, metaphors and such other aspects of their culture which are in their memory and handed down from generation to generation. These sources of their literary world speak of their spiritual world and the ecosystem. The older persons are the store house of of their oral literature and from these sources the literary world of theirs is disseminated among the youngsters. This book gives the folklore of four tribal communities namely, the Kharias, the Oraons, the Santals and the Mundas of Orissa. The Kharias are a hunting and food gathering community, the Oraons are noted for the dance and music and the Santals are well known as hard working cultivators and skilled in wall painting, and noted for their sense of beauty. The cultural patterns of these tribal communities and their lifeways and thoughtways are different from one another as revealed in the analysis of their oral literature. Even though they lead a life full of wants and difficulties, they are very labourious and joyful by virtue of which they forget their sorrows and miseries.