Chang San-cheng is a Taiwanese politician who has been the mayor of Taoyuan City since 25 December 2022. He was premier of Taiwan from 1 February 2016 until 20 May 2016, appointed by President Ma Ying-jeou. Before assuming the premiership, he had served as vice premier from 8 December 2014 under the Mao Chi-kuo cabinet. Chang was the first nonpartisan premier of Taiwan.

Taoyuan is a special municipality located in northwestern Taiwan, neighboring New Taipei City to the north-east, Yilan County to the south-east, and Hsinchu County to the south-west. Taoyuan District is the seat of the municipal government and which, along with Zhongli District, forms a large metropolitan area. Taoyuan developed from a satellite city of Taipei metropolitan area to become the fourth-largest metropolitan area, and fifth-largest populated city in Taiwan. "Taoyuan" literally means "peach garden" in Chinese, since the area used to have many peach trees. Formerly a county, Taoyuan became the latest new founding special municipality in 2014.