Yashima-ji (屋島寺) is a Shingon temple in Yashima, a lava plateau to the northeast of Takamatsu, Kagawa Prefecture, Japan. A branch temple of Ninna-ji in Kyoto, it is the eighty-fourth temple on the Shikoku 88 temple pilgrimage.[1] It is said to have been founded as a Ritsu school temple by Ganjin in 754, and to have been converted by Kōbō Daishi.[2][3] The 5x5 bay irimoya-zukuri tiled Hondō (1618) has been designated an Important Cultural Property.[4][5] A Heian period wooden seated statue of Senjū Kannon and the temple bell (1223) are also Important Cultural Properties.[6][7][8][9] There is a museum of temple treasures and items relating to the Battle of Yashima.[2]