The season began on 9 February 2018 and is scheduled to conclude on 7 October 2018.
[3] Buriram United are the defending champions, while Chainat Hornbill, Air Force Central and Prachuap have entered as the promoted teams from the 2017 Thai League 2.
The table lists the positions of teams after each week of matches.
In order to preserve chronological evolvements, any postponed matches are not included in the round at which they were originally scheduled, but added to the full round they were played immediately afterwards.
For example, if a match is scheduled for matchday 13, but then postponed and played between days 16 and 17, it will be added to the standings for day 16. sheets Updated to games played on 7 October 2018Source: Thai LeagueNotes:† Teams played previous season in Thai League 2 Source: Thai League