Chua Sian Chin (Chinese: 蔡善进; pinyin: Cài Shànjìn; 26 November 1933 – 26 February 2014) was a Singaporean politician who held several ministerial portfolios of Health, Education and Home Affairs in the early era of Singapore. He was 34 years of age when appointed as Health Minister in 1968, by then Prime Minister Lee Kuan Yew, which made him the youngest minister in Singapore. He was the Member of Parliament for MacPherson from 17 February 1968 to 14 August 1991. He retired from political service after 23 years in service.