Khenpo Karma Tharchin Rinpoche (3 February 1924 – 6 October 2019), widely known by his abbreviated name Khenpo Karthar Rinpoche, was a senior lama of the Karma Kagyu school of Tibetan Buddhism. Before his death he served as abbot of Karma Triyana Dharmachakra (KTD) Monastery in Woodstock, New York.