Chang Po-ya (張博雅 Pinyin: Zhāng Bóyǎ; born October 5, 1942) is the Chairwoman and founder of the Non-Partisan Solidarity Union, a political party in the Republic of China on Taiwan.

Born in Chiayi City to Hsü Shih-hsien (許世賢), a politician-doctor, Chang is a medical doctor educated in Kaohsiung Medical College (1968), the Institute of Public Health, National Taiwan University (1970), Johns Hopkins University (1974), and Kyorin University (1994).

She was the mayor of her home city, serving three terms (1983-89, 1997-2000), the first time succeeding her mother, Hsü; the last time succeeding her sister, Chang Wen-ying (張文英). The Chang daughters and mother are known as the Hsü Family of Chiayi (許家班).

She was the director of the cabinet-level Department of Public Health from June 2, 1979 to September 1, 1986, and the Minister of Interior from May 20, 1989 to February 1, 1991. Under Chen Shui-bian, she served as Governor of the Taiwan Provincial Government and a national policy advisor to President.

She is married to Chi Chan-nan (紀展南) with a son and a daughter.