Yong Khoon Seng (simplified Chinese: 杨昆贤; traditional Chinese: 楊昆賢; pinyin: Yáng Kūnxián; born 22 December 1941) was the Member of the Parliament of Malaysia for the Stampin constituency in Sarawak, representing the Sarawak United Peoples' Party (SUPP), from 1999 until 2013.
He was a Deputy Minister of Works in the ruling Barisan Nasional coalition government.
[1] Yong entered Parliament in 1990 for the seat of Padawan.
[3] Before entering politics, he was a pharmacist, graduating from the University of Queensland.
[3] However, at the 2013 general election, Yong lost his seat to a Democratic Action Party (DAP) candidate, Julian Tan Kok Ping.