Lee Si-chen (Chinese: 李嗣涔; pinyin: Lǐ Sìcén; Wade–Giles: Lǐ Sì-tsén; Pe̍h-ōe-jī: Lí Sû-chhâm; born 13 August 1952 in Gangshan, Kaohsiung, Taiwan), is a Taiwanese engineer specializing in semiconductors, a researcher in amorphous silicon in the early development in Taiwan, and an IEEE Fellow.

He has been a professor of electrical engineering since 1982 and the president of National Taiwan University from 2005 to 2013.

He received a bachelor's degree in electrical engineering from National Taiwan University (1974) and a master's degree (1977) and PhD (1981), both in electrical engineering, from Stanford University.

He is also a professor of electrical engineering at the National Taiwan University (1985 - ).

[2][3] He is interested in the scientific research of Chinese Qigong and extrasensory perception.