Onamuchi-no-mikoto is an alternate name for Okuninushi, a major kami in Japanese mythology associated with nation-building, agriculture, and medicine. According to the Kojiki and Nihon Shoki, this deity, sometimes paired with Sukunahikona, is credited with establishing the arts of healing and medicine for the benefit of humans and animals alike. He is enshrined at various shrines, including Izumo Taisha, where he is venerated as a founding figure connected to healing traditions, though specific curative claims made by worshippers reflect devotional belief rather than verifiable fact.