was a Japanese samurai of the Sengoku period, who ruled Kutsukidani Castle in à Âmi Province. He was a supporter of the shà Âgun Ashikaga Yoshiharu.
His heir is Kutsuki Mototsuna. Harutsuna's descendants became daimyà  in the Edo period. The Kutsuki were a powerful clan at Kutsuki-tani (æ½æ¨谷), Takasima-gori, à Âmi Province.