Onmyōji (陰陽師) is a novel series written by Baku Yumemakura. It follows the story of a master in onmyōdō, a traditional Japanese cosmology. Published as individual short stories, Onmyōji first appeared as a serial in the publisher Bungeishunju's magazine All Yomimono in the September 1986 issue. In addition to these short stories collections, Yumemakura also wrote novel-length stories, and picture books have been published.