General elections were held in Singapore on Friday, 11 September 2015 to elect 89 members of Parliament. The outgoing Parliament had been dissolved and the general election called by President Tony Tan on 25 August, on the advice of Prime Minister Lee Hsien Loong. The elections were for the 13th Parliament since independence in 1965, using the first-past-the-post electoral system.

The prime minister of Singapore is the head of government of Singapore. The president appoints the prime minister, a Member of Parliament (MP) who in their opinion, is most likely to command the confidence of the majority of MPs. The incumbent prime minister is Lee Hsien Loong, who took office on 12 August 2004. He will be succeeded by Lawrence Wong on 15 May 2024.