Cheng Yu-cheng

Cheng Yu-cheng (Chinese: 鄭余鎮; pinyin: Zhèng Yúzhèn; 12 January 1946 – 7 January 2025) was a Taiwanese politician.

Cheng was born on 12 January 1946. His father Cheng Chien-bang was active in the tangwai movement. The younger Cheng studied at the National Taipei University of Technology. Cheng Yu-cheng died of a heart attack at National Taiwan University Hospital on 7 January 2025, at the age of 78.

Cheng was raised in what became Xinzhuang District of New Taipei. He began his political career as leader of the area in 1977, before taking a seat on the Legislative Yuan in 1981. He won a second term in 1983, but lost the 1986 elections. Shortly thereafter, Cheng joined the Democratic Progressive Party. He returned to the legislature in 1990 as a DPP representative. Cheng subsequently lost a string of elections until regaining his seat in 2001. In August 2002, Cheng flew to the United States, after he and his legislative aide Sophie Wang had reportedly married in July. He retained former legislative colleague Chiu Chang as his legal representative while seeking a divorce from his wife Lu Pei-ying. However, the divorce was never finalized. Cheng kept his position as a legislator, but left the Democratic Progressive Party in November 2002, days before he was formally expelled. Cheng then became an independent before joining the Non-Partisan Solidarity Union upon its founding in June 2004. He ran for the Legislative Yuan twice thereafter, in the 2004 and 2012 elections.