is the lowest level of club football competition which competed in the tournament in Thailand since 1963.

It was founded by Football Association of Thailand along with Khor Royal Cup in 1963.

Only the best eight, or the quarter-finalist clubs, of the tournament promote to the Khor Royal Cup next season, while there's no relegation and the remaining clubs are still in this division until they can reach the quarter-final round or promotional spots.

Kasem Pitthaya School1 Forestry Alumni2 Naval Medical Department2 Thammanusorn Foundation2 Patthana F.C.2 Samut Sakhon Witthayalai School1 Ban Krua School2 Esan Pattaya2 Play-maker United2 Wangman Tambon Authority Organization2 Wangphailom Sport1 Institute of Physical Education Chiang Mai Campus2 Royal Irrigation Department2 Therdthai Diamond2 T.W.D.

United2 Wat Pa Ked School1 Institute of Physical Education Samut Sakhon Campus2 King Mongkut's University of Technology North Bangkok2 Ruam Namjai Foundation2 Wat Nongjorg School Alumni Association2 Amphawan Witthayalai School Don Muang Alumni Association Sriracha District Locomotive Club Institute of Physical Education Maha Sarakham Campus Fisheries Association of Laem Singh District1 Korat A.F.C.2 Amnat Charoen Alumni Association2 Pithakkan Foundation2 Lumplee Tambon Authority Organization2 Amnuaysil Alumni Association1 Bhumindhara Witthaya2 King Petch Club2 Thammanusorn Foundation2 Southeast Bangkok2 Note: