Tony Tan, Singaporean academic and politician, 7th President of Singapore
Tony Tan Keng Yam (born 7 February 1940) is a retired Singaporean politician and deputy prime minister who served as the 7th president of Singapore from 2011 to 2017.Before entering politics, Tan was a general manager in the Overseas-Chinese Banking Corporation. Tan joined the People's Action Party and became Member of Parliament for Sembawang in 1979. He served in the ministerial portfoliios for education from 1980 to 1991, finance from 1983 to 1985 and defence from 1985 to 1991. He was then appointed as deputy prime minister from 1995 to 2005, which he served concurrently as co-ordinating minister for security and defence from 2003 to 2005. Tan resigned from the cabinet in 2005 and assumed various chairmanship appointments in the Government of Singapore Investment Corporation. He resigned from his positions in 2010 and contested in the following year's presidential election as an independent.

Tan won the 2011 Singaporean presidential election in a four-cornered fight and served as president until 2017. He did not run for reelection in the 2017 presidential election, which was reserved for Malay candidates after a constitutional amendment. He is the only living former president of Singapore.