Lady Ōnu ( ; d. 6 August 724) was a Japanese noblewoman. She was the daughter of Soga no Akae and bunin to Emperor Tenmu, with whom she had three children: Prince Hozumi (穂積皇子) (d. 715) Princess Ki (紀皇女) (?–?) Princess Takata (田形皇女) (d. 728), Saiō in Ise Shrine (706–707), and married to Prince Mutobe later