The 2017–18 Welsh Premier League was the 26th season of the Welsh Premier League, the highest football league within Wales since its establishment in 1992. The New Saints are the defending champions. The season fixtures were announced on 23 June 2017. The season began on 11 August 2017 and concluded in April 2018; the Europa League play-offs followed afterwards. Teams played each other twice on a home and away basis, before the league split into two groups at the end of January 2018 – the top six and the bottom six.