Karimsà Âng () was a Baekje-era Korean mountain fortress built on the mountain Seongheungsan () in what is now Buyeo County, South Chungcheong Province, South Korea. It was first completed in 501 (Korean calendar). It is attested to in the Samguk sagi. It was used to protect two successive capitals of Baekje. On January 21, 1963, it was designated Historic Site of South Korea No. 4.