All the teams from the Thai League 1 and Division 1 League were automatically entered and teams from the Division 2 League as well as university and schools teams could apply to enter. The qualifying round took place from 27–30 June.
All teams from the Thai League 1 and Division 1 League automatically qualified for the competition, while teams from the Division 2 League, along with university and school teams, could apply. The qualifying round took place between June 27th and 30th.