Chang Hao (; 30 April 1936 – 21 April 2022) was a Taiwanese historian and sinologist.
Chang was a native of Xiamen, born on 30 April 1936 to parents Wang Hui-fen and Chang Ch’ing-chen. Due to the Chinese Civil War, he and his family moved to Chongqing, then Nanjing, before settling in Taiwan in 1949. He graduated from National Taiwan University in 1957, having studied under Yin Haiguang. Chang completed a doctorate at Harvard University in 1966, advised by Benjamin I. Schwartz and Yang Lien-sheng.
Chang began his teaching career at Louisiana State University in 1964, then moved to Ohio State University in 1968, and joined the Hong Kong University of Science and Technology faculty in 1998, eventually retiring in 2004, and relocating to Reston, Virginia, the following year. Chang was elected an academician of Academia Sinica in 1992, and affiliated with the Academia Sinica's Institute of History and Philology as a corresponding research fellow. In 2022, Chang donated his papers and books to Taiwan's National Central Library.
Chang Hao was married to Liao Jung-jung from 1964 to her death in 2019, of Alzheimer's disease. In later life, Chang was also diagnosed with Alzheimer's, and moved to California to be nearer to one of his daughters. Chang died in Albany, California, aged 85, on 21 April 2022.