Tan Cheng Bock, Singaporean doctor and politician

Adrian Tan Cheng Bock is a Singaporean former politician and physician. A former member of the governing People's Action Party (PAP), he was the Member of Parliament (MP) representing Ayer Rajah Single Member Constituency (SMC) between 1980 and 2006. He left politics before the 2006 general election, before leaving the PAP in 2011 to contest in the 2011 presidential election, where he was unsuccessful in his bid in a four-cornered fight, losing with marginally 34.85% of the votes to Tony Tan.

April 26 is the 116th day of the year in the Gregorian calendar; 249 days remain until the end of the year.