Ratnakarashanti (Skt. Ratnākaraśānti; Tib. རིན་ཆེན་འབྱུང་གནས་ཞི་བ་, rinchen jungné shyiwa, Wyl. rin chen 'byung gnas zhi ba) was a famous abbot at the great monastic university of Vikramashila in India who was active in the beginning of the 11th century. Under the name of Shantipa (Skt. Śāntipa), he was also one of the eighty-four mahasiddhas, the great realized masters of the Vajrayana teachings. He was a contemporary and a teacher of Atisha.