Unagihime-no-mikoto, whose name translates roughly to "eel princess," is a lesser-known figure in Japanese folk belief associated with eels and, by extension, with waters, rivers, and the natural forces that sustain them. Devotion to this figure appears mainly in localized shrine traditions and folk practices rather than in the classical mythological canon such as the Kojiki or Nihon Shoki. Details about specific rites, origins, and worship practices remain sparse and vary by region, reflecting the diverse and often localized nature of Japanese folk religion.