Tan Boon Teik DUBC SC (/ˌtɑːn ˌbʊn ˈteɪk/ tahn-buun-TAYK; 17 January 1929 – 10 March 2012) was a Singaporean judge who served as Acting Attorney-General of Singapore between 1967 and 1968, and Attorney-General of Singapore between 1969 and 1992. Tan was appointed Attorney-General at the age 39, he remains the youngest person to have held this post and remains the longest-serving Attorney-General of post-independence Singapore, having held office for just over 25 years. Tan suffered from Parkinson's disease towards the end of his life. Following internal bleeding, he died on 10 March 2012.