Ratnakarashanti (Skt. Ratnākaraśānti; Tib. རིན་ཆེན་འབྱུང་གནས་ཞི་བ་, rinchen jungné shyiwa, Wyl. rin chen 'byung gnas zhi ba, or shan+ti pa) 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; Tib. ཤན་ཏི་པ་, shan ti pa), 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.