Ishikirimaru is a Japanese tachi sword made in the 12th century during the Heian period. It has been identified as an Important Art Object of Japan, and since 2018 has been owned by the Ishikiri-Tsurugiya Shrine in East Osaka. There exist several swords of the same name. This article concerns the Ishikirimaru currently in the possession of the Ishikiri-Tsurugiya Shrine.