Princess Ki (紀皇女) was a Japanese princess during the Asuka period of Japanese history. She was a daughter of Emperor Temmu and Lady Ōnu, whose father was Soga no Akaye. Her full brother was Prince Hozumi, and her full sister Princess Takata.
Some people say that she was once a wife of Prince Karu, a grandson of Empress Jitō, but no clear evidence exists.
Man'yōshū has some poems of her love of Prince Yuge, a son of Princess Ōe. No other historical materials recording about her life are existing. No records say that she married him.