Li Meng-yen (Chinese: 李孟諺; pinyin: Lǐ Mèngyàn; born 12 December 1966) is a Taiwanese politician and engineer.

[2][3] Li obtained his bachelor's degree in environmental engineering from National Chung Hsing University and earned a Master of Science (M.Sc.)

Li was appointed acting Tainan Mayor on 7 September 2017 as William Lai was named premier by president Tsai Ing-wen.

[6] Speaking at a summit held at National Cheng Kung University in June 2018, Li said that his city government aimed to declare English as the second official language of Tainan, starting by having bilingual signs on information at major public places.

[8][9] Li was named the spokesman of the Executive Yuan on an interim basis on 15 November 2020, following the resignation of Ting Yi-ming from the position.