Thích Quảng Độ (; 27 November 1928 – 22 February 2020) was a Vietnamese Buddhist monk and scholar who was the patriarch of the Unified Buddhist Church of Vietnam (UBCV) from 2008 until his death. Since the execution of his master at the hands of the communist Viet Minh in his teenage years, Thích Quảng Độ had been involved in political activism, firstly against the anti-Buddhist policies of the Catholic President of South Vietnam Ngo Dinh Diem. After the fall of Saigon, the UBCV was banned by the communist government, and as one of the senior monks in the organisation, Thích Quảng Độ was at the forefront of the UBCV's defiance of the government, refusing to join the government-endorsed Vietnamese Buddhist Church. He was detained repeatedly by the communist authorities in the last 45 years of his life for his resistance and criticism of their policies, particularly his calls for multi-party democracy. During the Vietnam War period, he also served as a university academic in Buddhism, translated sutras and wrote books, notably a nine-volume Buddhist encyclopedia, and two-volume dictionary between Vietnamese and Sino-Vietnamese.