The Singaporean presidential election of 1999 was held to elect the President of Singapore to succeed the incumbent, Ong Teng Cheong, whose term was to end on 31 August 1999. The Writ of Election declared 18 August to be Nomination Day, and 28 August would have been declared Polling Day if more than one candidate were to stand nominated on Nomination Day.
After considering the candidates' applications, the Presidential Elections Committee issued a Certificate of Eligibility to Ambassador-at-large S. R. Nathan, but declined to do so for private tutor Ooi Boon Ewe and Democratic Progressive Party leader Tan Soo Phuan. On Nomination Day, Nathan was the only candidate to stand nominated. He was declared duly elected to the office of President, and assumed office on 1 September 1999.