Lee Ying-yuan (; 16 March 1953 – 11 November 2021) was a Taiwanese politician. He was elected to the Legislative Yuan in 1995 and resigned in 2000.
In 2005, Lee was made the Minister of Council of Labor Affairs, which he led until 2007. Lee has also was Secretary-General of the Executive Yuan and the Democratic Progressive Party. He was reelected to the Legislative Yuan in 2012. He was appointed the Minister of Environmental Protection Administration in 2016.
He was Taiwan's representative to Thailand from 2020 to 2021. He was born in Yunlin County, Taiwan.
Lee died on 11 November 2021 in Taipei, Taiwan from a rare form of pancreatic cancer, aged 68.
