Têng Ssu-yü (traditional Chinese: 鄧嗣禹; simplified Chinese: 邓嗣禹; pinyin: Dèng Sìyǔ; Wade–Giles: Teng Ssu-yü; August 12, 1906 – April 5, 1988) was a Sinologist, bibliographer, and professor of history at Indiana University. Born in Hunan Province, China, he died in Bloomington, Indiana, after being struck by a car. Teng was trained in China in both the traditional skills of the Confucian scholar and contemporary historical attitudes and techniques. When he came to the United States in 1937, he became a member of the founding generation of American China studies. He wrote not only specialized monographs and bibliographical tools for academics but also such broad studies for introductory students as China's Response to the West.