Cai Yinzhou (born 16 October 1990) is a Singaporean politician who was elected to the Parliament of Singapore in the 2025 general election. He represents Toa Payoh Central division of the BishanâÂÂToa Payoh Group Representation Constituency as a member of the People's Action Party.
Prior to entering politics, Cai was a social entrepreneur and he was named as the 2020 Strait Times Singaporean of the Year.
In the 2025 general election, Cai was fielded in BishanâÂÂToa Payoh GRC led by Anchor Minister Chee Hong Tat to replace retiring Defence Minister Ng Eng Hen. His team would win with 75% of the vote.