Wu, Jingxiong (Wu Ching-hsiung or John C. H. Wu) is a scholar of international law, juristic philosopher, diplomat, translator, writer, and poet.

Wu was born in 1899 in Ningbo, Zhejiang. He was trained in traditional education based on Confucianism, Taoism, and Buddhism. He studied law at the Suzhou Comparative Law School of China in Shanghai, where he came into contact with Western Methodist missionaries, and was baptized John. In 1937 while practicing law in Shanghai, he became a Roman Catholic. His conversion was motivated by a chance reading of the autobiography of St. Theresa of Lisieux. He later earned the degree of Doctor of Jurisprudence at the University of Michigan Law School. While there, Wu then wrote a letter to the then eighty-year-old, Oliver Wendell Holmes, U.S. Supreme Court Justice and a neo-Kantian philosopher. Their correspondence continued for 11 years.

In 1944, Wu served as an adviser to the Chinese delegation at the United National Conference in San Francisco, and from 1947-1949, as Chinese ambassador to the Vatican. In 1951, he and his family moved to the United States, where he was a professor at Seton Hall Law School from 1951 until he retired in 1967. In 1957, he was appointed a judge of the Permanent Court of Arbitration at The Hague.

Wu was a principal author of the Constitution adopted by the Nationalist Government in 1946. He was the founder of T'ien hsia monthly (1935-1941), the English-language periodical on Chinese culture. He translated Psalms (1946) and the New Testament (1949) into Chinese, and Tao teh ching (Dao de jing) of Laozi into English. He authored Beyond East and West (autobiography, 1951), The Interior Carmel: The Threefold Way of Love (1953), Fountain of Justice : A Study in the Natural Law (1955), Cases and Materials on Jurisprudence (1958), and Chinese Humanism and Christian Spirituality (1965). His papers, "The Status of the Individual in Chinese Thought and Practice" (1959) and "The Status of the Individual in the Political and Legal Traditions of Old and New China" (1964), were presented at the the East-West Philosophers' Conferences in Hawaii in 1959 and 1964, and are included in Charles Alexander Moore's book, The Chinese Mind: Essentials of Chinese Philosophy and Culture. Some of the letters Wu exchanged with Oliver Wendell Holmes were published in Justice Holmes to Doctor Wu; An Intimate Correspondence, 1921-1932 (1947). Some unpublished letters of Justice Holmes to Wu are at the U.S. Supreme Court Library.