Lam Sai-hung GBS JP (Chinese: 林世雄, born 8 October 1961)[1] is a Hong Kong engineer and governmental official who served as the Secretary for Transport and Logistics from 2022 to 2024.

After graduation from Wong Shiu Chi Secondary School, Lam studied civil engineering in the University of Hong Kong and obtained a Bachelor of Science in 1983.

[2] Two years later he became permanent Secretary of Development (Works), and retired in October 2021.

[3] Nine months after his retirement, he was appointed by the new chief executive John Lee as Secretary for Transport and Logistics in 2022.

[4] In December 2024, Lam, along with culture minister Kevin Yeung, was removed from office by Chief Executive John Lee, who did not answer directly to reporters on why the two were replaced.