Mireuksa (Korean: 미륵사) was the largest Buddhist temple in the ancient Korean kingdom of Baekje. The temple was established in 602 by King Mu and is located 36.012083 N, 127.031028 E, modern Iksan, North Jeolla Province, South Korea. The site was excavated in 1980, disclosing many hitherto unknown facts about Baekje architecture. Mireuksaji Stone Pagoda is one of two extant Baekje pagodas. It is also the largest as well as being among the oldest of all Korean pagodas.

King Mu of Baekje (581?–641) was the 30th king of Baekje, one of the Three Kingdoms of Korea. He was the 4th son of King Baekje.