Y. T. Wu or Wu Yao-tsung (simplified Chinese: 吴耀宗; traditional Chinese: 吳耀宗; pinyin: Wú Yaòzōng) (1893–1979) was a Protestant Christian leader in China who played a key role in the establishment of the Three-Self Patriotic Movement. Wu also played an important role in the theology of K. H. Ting.
Wu was born in Guangzhou on 4 November 1893 to a family engaged in commerce. Beginning in 1913, he studied tax at a school for tax studies in Beijing and, upon graduation, worked for a customs office.
Wu converted to Christianity in his youth. In 1918, he became a member of a Congregational Church and was baptized. In 1924, he worked for YMCA, managing its schools and then went to the United States to study at Union Theological Seminary (affiliated with the Columbia University) at New York City, from which he earned a master's degree in philosophy.
Wu became a proponent of the social gospel and emphasized the ethical teachings of Jesus rather than the supernaturally oriented theology. He had been a YMCA secretary, author, and editor of a Christian magazine before the communist revolution in China was complete. Wu was regarded as one of the earliest to reflect on the use of "violence in revolution and theological implications of communism" among Chinese Christian leaders. He was initially critical of the use of force by Chinese communists and considered himself a pacifist and did not want to join the communist party.