Promoted clubs Promoted from the 2017 Thailand Amateur League Bangkok Metropolitan Region •
Air Force Robinson Relegated clubs Relegated to the 2018 Thailand Amateur League Bangkok Metropolitan Region •
Samut Prakan United Renamed clubs •
Bangkok Glass B authorize from
BGC •
Bangkok United B was renamed to
Bangkok United U-23 •
Grakcu Look Tabfah Pathum Thani was renamed to
Grakcu Sai Mai United Suspended clubs •
Bangkok Glass B is suspended 1 year from
2017 Thai League 4 Bangkok Metropolitan Region get lower 7th.
Expansion clubs •
BCC Club-licensing football club didn't pass to play 2018 Thai League 4 Bangkok Metropolitan Region. This team is banned 2 years and Relegated to
2020 Thailand Amateur League Bangkok Metropolitan Region.
Reserving clubs •
Police Tero U-23 is
Police Tero Reserving this team which join Northern Region first time. •
Port U-23 is
Port Reserving this team which join Northern Region first time. ==Stadium and locations==