The Yūki temple ruins (結城廃寺跡, Yūki Haiji ato) is an archaeological site with the ruins of a large Buddhist temple located in the Yabata-Kamiyamakawa neighborhood of the city of Yūki, Ibaraki, in the northern Kantō region of Japan. The temple no longer exists, but the temple grounds were designated as a National Historic Site in 2002.