President of Singapore
The eighth and current president, Halimah Yacob, took office on 14 September 2017, becoming the first president elected as she was the sole eligible candidate under the new reform terms which took effect earlier that year. She is also the first female President of Singapore.
S. R. Nathan
Sellapan Ramanathan (; 3 July 1924 – 22 August 2016), usually referred to as S. R. Nathan, was a Singaporean Tamil politician who was the sixth President of Singapore & Commander-in-Chief of Singapore Armed Forces from 1999 to 2011, having been elected in uncontested elections in 1999 and 2005. In 2009, he surpassed Benjamin Sheares to become Singapore's longest-serving President.