Tournament format
The tournament will be divided into 12 sub-regions with 3 stages in each sub-regions. Group stage: The 253 teams are divided into groups in each upper and lower region. The winners of each group in each region will advance to the knockout stages. Knockout stage: The winners of each group will compete against each other. Especially the winner will go through to the next round. Final stage: The winners in the upper and lower regions compete for the winner of the national championship and promoted to the Thai League 3. Championship stage: Winner in the North, Northeastern, Eastern Region Western region, Bangkok Metropolitan, Southern region have the right to compete in the national championshipNorthern Region
Upper northern subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group F Group GKnockout round
Quarter-finals Semi-finalsFinal round
The winner upper northern region will compete in the finals in the northern region. FinalLower northern subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group FKnockout round
Quarter-finals Semi-finalsFinal round
The winner lower northern region will compete in the finals in the northern region. FinalFinal northern region
The winner between the upper north and the lower north has the right to compete in the national championship round and is to be promoted to theNorth Eastern Region
Upper northeastern subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group F Group G Group H Group I Group J Group K Group LKnockout round
Round of 12 Quarter-finals Semi-finalsFinal round
The winner upper northeastern region will compete in the finals in the north eastern region. FinalLower northeastern subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group F Group G Group HKnockout round
Quarter-finals Semi-finalsFinal round
The winner lower northeastern region will compete in the finals in the north eastern region. FinalEastern Region
Upper eastern subregion
Teams
Group stage
Group A Group B Group CKnockout round
Semi-finalsFinal round
The winner upper eastern region will compete in the finals in the eastern region. FinalLower eastern subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group FKnockout round
Quarter-finals Semi-finalsFinal round
The winner lower eastern region will compete in the finals in the eastern region. FinalFinal eastern region
The winner between the upper eastern and the lower eastern has the right to compete in the national championship round and is to be promoted to theWestern Region
Upper western subregion
Teams
Group stage
Group A Group B Group C Group D Group EKnockout round
Quarter-finals Semi-finalsFinal round
The winner upper western region will compete in the finals in the western region. FinalLower western subregion
Teams
Group stage
Group A Group B Group C Group D Group E Group F Group G Group HKnockout round
Quarter-finals Semi-finalsFinal round
The winner lower western region will compete in the finals in the western region. FinalBangkok Metropolitan Region
Bangkok Metro
Teams
Group stage
Group A Group B Group C Group D Group E Group F Group G Group HKnockout round
Quarter-finals Semi-finalsFinal round
The winner bangkok Metro region will compete in the finals in the bangkok metropolitan region. FinalMetropolitan Region
Teams
Group stage
Group A Group B Group C Group D Group E Group FKnockout round
Quarter-finals Semi-finalsFinal round
The winner metropolitan region will compete in the finals in the bangkok metropolitan region. FinalSouthern Region
southern region has 19 clubs competing, comprising 8 in the upper south and 11 in the lower south.Upper southern subregion
Teams
Group stage
Group A Group BFinal round
The winner upper southern region will compete in the finals in the southern region. FinalLower southern subregion
Teams
Group stage
Group A Group B Group C Group DKnockout round
Semi-finalsFinal round
The winner lower southern region will compete in the finals in the southern region. FinalPromoted clubs
According to FA Thailand's declaration about promoting clubs to the 2022-23 Thai League 3 (T3) by considerate number of participating clubs in each regions, FAT revealed that there will be nine clubs to promote to the next season of T3 League. * Kongkrailas United ''(Northern winner)'' * Rongseemaechaithanachotiwat Phayao ''(Northern runner-up)'' * Rasisalai United ''(Northeastern winner)'' * Warship United ''(Eastern winner)'' * Samutsakhon City ''(Bangkok & fields winner)'' * Kanchanaburi City ''(Western winner)'' * Lopburi City ''(Western runner-up)'' * Muangtrang United ''(Southern winner)'' * Wiangsa City ''(Southern runner-up)''References
{{2021–22 in Thai football Thailand Amateur League seasons 2022 in Asian association football leagues