2012 Regional League Division 2 Bangkok Metropolitan Region

2012 Regional League Division 2 Bangkok Metropolitan Region is the 4th season of the League competition since its establishment in 2009. It is in the third tier of the Thai football league system.

Promoted clubs
No club was promoted to the Thai Division 1 League. Last years league champions Kasetsart University and runners up North Bangkok College failed to qualify from the 2011 Regional League Division 2 championship pool.

Relegated clubs
RBAC Mittraphap, Samut Prakan Customs United and Thai Honda were relegated from the 2011 Thai Division 1 League.

Renamed clubs

 * RBAC Mittraphap renamed RBAC BEC Tero Sasana.
 * Samut Prakan Customs United renamed Customs United whom they were known as in the 2009 league campaign.
 * Prachinburi renamed Rayong United. and move to Rayong province

Relocated clubs
Samut Sakhon re-located to the Regional League Bangkok Area Division from the  Regional League Central-East Region 2011.

Maptaphut Rayong, Royal Thai Fleet, Thanyaburi United have all been moved into the Central-East Region 2012

Paknampho NSRU moved into the Division 2 League Northern Region 2012

Withdrawn clubs
Raj-Vithi have withdrawn from the 2012 campaign.

Returning clubs
Central Lions (previously known as (North-Central)  is returning to the league.

Expansion clubs
Krung Thonburi, Rangsit