Sitoh Yih Pin CBE[4] (Chinese: 司徒宇斌; pinyin: Sītú Yǔbīn; born 2 December 1963)[2][3] is a Singaporean politician.

Chiam's wife, Lina Loh, contested in Potong Pasir SMC under the Singapore People's Party banner.

[2][7] In the 2015 general election, Sitoh won again in Potong Pasir SMC against Lina Loh, garnering 66.39% of the vote and thus continuing as a Member of Parliament for a second term.

[12] Sitoh retained his parliamentary seat in the 2020 general election again after winning 60.67% of the vote against the Singapore People's Party's Jose Raymond.

[9][13] He also serves as an executive member of the PAP Community Foundation and was appointed as Vice-Chairperson of Jalan Besar Town Council (JBTC) since 2020.