The 2017 S.League (also known as the Great Eastern Hyundai S.League for sponsorship reasons) was the 22nd season of the S.League, the top-flight Singaporean professional league for association football clubs, since its establishment in 1996. The season began on 26 February 2017, and concluded on 18 November 2017. Albirex Niigata (S) were the defending champions. It was the final season with the "S.League" name as it was officially renamed to Singapore Premier League from the 2018 season onwards.