2012 Regional League Division 2 Northern Region

2012 Regional League Division 2 Northern Region is the fourth 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 Phitsanulok and runners up Lamphun Warrior failed to qualify from the 2011 Regional League Division 2 championship pool.

Relegated clubs
Chiangmai were relegated from the 2011 Thai Division 1 League.

Relocated clubs
Paknampho NSRU re-located to the Regional League Northern Division from the Regional League Bangkok Area Division.