The 2018–19 Premier League Tournament was the 31st season of first-class cricket in Sri Lanka's Premier Trophy. The tournament started on 30 November 2018 and concluded on 10 February 2019. Fourteen teams took part in Tier A of the competition, split into two groups of seven. Bloomfield Cricket and Athletic Club finished in last place in the previous tournament, and were relegated to Tier B for this season. Negombo Cricket Club replaced them for this years' competition after they won the 2017–18 Premier League Tournament Tier B title. Chilaw Marians Cricket Club were the defending champions.