A total of 20 teams competed in the league this season.
Promoted to Thai Premier League Relegated to Regional League Division 2 Relegated from Thai Premier League Promoted from Regional League Division 2 Note: Flags indicate national team as has been defined under FIFA eligibility rules.
Players may hold more than one non-FIFA nationality.
The number of foreign players is restricted to five per TPL team, including a slot for a player from AFC countries.
Updated to games played on 12 December 2015Source: Thai Premier LeagueNotes:† Teams played previous season in Division 2