Karma Tsultrim Gyurmé Trinlé (Tibetan: ཀརྨ་ཚུལ་ཁྲིམས་འགྱུར་མེད་ཕྲིན་ལས་, Wylie: kar+ma tshul khrims 'gyur med phrin las)—more commonly known as Ringu Tulku (Tib. རི་མགུལ་སྤྲུལ་སྐུ་, Wyl. ri mgul sprul sku) for the Ringu Monastery with which his incarnation line is associated—is a lama of the Kagyu school of Tibetan Buddhism and proponent of the Rimé (non-sectarian) movement. In 1975 he was awarded the academic title of Khenpo, and in 1983 the that of Dorje Lopön Chenpo (Sanskrit: mahavajracarya; equivalent to a PhD). He served as Professor of Tibetology in Sikkim for 17 years, and since 1990 has been traveling and teaching Buddhism and meditation at more than 50 universities, institutes and Buddhist centers in Europe, USA, Canada, Australia and Asia.