President of Singapore
The President of the Republic of Singapore is the country's head of state. Singapore has a parliamentary system of government. Executive authority is exercised by the Cabinet led by the Prime Minister of Singapore. The current president is Halimah Yacob, who was elected unopposed at the 2017 presidential election. She is the first female President of Singapore and first Malay head of state in 47 years since the death of Yusof Bin Ishak, Singapore's first president.
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.