Toyotama-hime is a goddess in Japanese mythology who appears in Kojiki and Nihon Shoki. She is the daughter of the sea deity, Watatsumi, and the wife of Hoori. She is known as the paternal grandmother of Emperor Jimmu, the first emperor of Japan.

The Kojiki , also sometimes read as Furukotofumi or Furukotobumi, is an early Japanese chronicle of myths, legends, hymns, genealogies, oral traditions, and semi-historical accounts down to 641 concerning the origin of the Japanese archipelago, the kami (神), and the Japanese imperial line. It is claimed in its preface to have been composed by Ō no Yasumaro at the request of Empress Genmei in the early 8th century (711–712), and thus is usually considered to be the oldest extant literary work in Japan.