Fairy Navigator Runa (妖界ナビ・ルナ, Youkai Navi Runa) is a children's novel series by Miyoko Ikeda published by Iwasaki Shoten. It was later adapted into a manga series by Michiyo Kikuta published in Nakayoshi by Kodansha and licensed by Del Rey. Publication was taken over by Kodansha after the second volume of the manga was released by Del Rey.