Kōnomine Castle (高嶺城, Kōnomine-jō) is a castle structure in Yamaguchi, Japan.

It is located on a 338 meter mountain.

[1][2] Kōnomine Castle was built in 1556 by Ōuchi Yoshinaga as a supporting castle of Ōuchi-shi Yakata, but Mōri Motonari`s army advanced to Suō Province, Ōuchi Yoshinaga left Ōuchi-shi Yakata and Kōnomine Castle without resistance.

[3][4] In 1638, Kōnomine castle was abandoned.

[5] The castle is now only ruins, with some stone walls and moats left intact.