Team changes Promoted clubs No club was promoted to the
Thai Division 1 League. Last years league champions
Prachinburi United and runners up
Maptaphut Rayong failed to qualify from the
2014 Regional League Division 2 championsleague round.
Relegated clubs Sriracha Ban Bueng were relegated from the
2014 Thai Division 1 League.
Renamed clubs •
Maptaphut Rayong renamed
Marines Maptaphut. •
Sriracha Ban Bueng renamed
Tawee Wattana.
Withdrawn clubs Pakchong United and
TG Rayong have withdrawn from the 2015 campaign.
Expansion clubs Kaeng Khoi TRU joined the newly expanded league setup. ==Stadium and locations==