Matsura Sayohime or Matsura no Sayohime (松浦佐用姫, "Lady Sayo of Matsura") ('Lady Sayo of Matsura') or Matsuura Sayohime was a legendary heroine in Japanese mythology, the wife of the historical Ōtomo no Satehiko. She is referred to as Lady Otohi or Otohihime in an alternate ancient source. The legend also recalled that she dropped a precious mirror which was a gift from her husband, and later it came to be believed that she had committed suicide by throwing herself into the river while clutching the mirror. This was then dramatized for the noh theatre in the early 15th century.