Desmond Lee Ti-Seng (Chinese: 李智陞; pinyin: Lǐ Zhìshēng; born 15 July 1976) is a Singaporean politician and lawyer who has been serving as Minister for National Development and Minister-in-charge of Social Services Integration[1] since 2020.

A lawyer by profession, Lee had worked at various public-sector institutions, including the Supreme Court, Attorney-General's Chambers and Temasek Holdings before entering politics.

He made his political debut in the 2011 general election as part of a five-member PAP team contesting in Jurong GRC and won with 66.96% of the vote.

[6] Lee made his political debut in the 2011 general election as part of a five-member People's Action Party (PAP) team contesting in Jurong GRC and won 66.96% of the vote.

Following the 2011 general election, Lee served as a member of the Government Parliamentary Committees for Culture, Community and Youth, Home Affairs, Law, and Social and Family Development.

At the 2020 general election, Lee was part of the five-member PAP team contested in West Coast GRC and won with 51.69% of the vote.