2016 Football Division 3
The 2016 Football Division 3 is the 1st season of the League competition since its establishment in 2016. It is in the fourth tier of the Thai football league system.
Northern Region
Teams
Format
Group stage: A total 13 clubs will be divided into four groups of three clubs except group 4 which has four clubs to play round-robin matches at a neutral venue. The best two clubs of each group will qualify to the knock-out stage.Knock-out stage: A total of 8 clubs which has qualified from the group stage will play single-elimination stage until there are only two finalists of the tournament.
First round
Group A
Group B
Group C
Group D
Quarter-finals Round
Semi-finals Round
Final round
North Eastern Region
Member clubs
| Section | Club | Province | Years |
| 1 | Nakhon Ratchasima United | Nakhon Ratchasima | 2016 |
| 1 | Korat City | Nakhon Ratchasima | 2016 |
| 1 | Korat | Nakhon Ratchasima | 2016 |
| 2 | Bundit Asia College | Khon Kaen | 2016 |
| 2 | Wang Saphung | Loei | 2016 |
| 2 | Huai Thalaeng | Nakhon Ratchasima | 2016 |
| 3 | Nong Han | Udon Thani | 2016 |
| 3 | Pern Pak Chong | Nakhon Ratchasima | 2016 |
| 3 | TWD Tanaytum | Sisaket | 2016 |
| 3 | Korat United | Nakhon Ratchasima | 2016 |
Format
Group stage: A total 10 clubs will be divided into four groups of three clubs except group 3 which has four clubs to play round-robin matches at a neutral venue. The best two clubs of group A and B, The best three clubs of group C and The best points of 3rd position in group A and B will qualify to the knock-out stage.Knock-out stage: A total of 8 clubs which has qualified from the group stage will play single-elimination stage until there are only two finalists of the tournament.
First round
Group A
Group B
Group C
Quarter-finals Round
Semi-finals Round
Final round
Eastern Region
Member clubs
Format
Group stage: A total 21 clubs will be divided into four groups of three clubs except group 7 which has four clubs to play round-robin matches at a neutral venue. The best clubs of group A and G qualify to Quarter-finals round of the knock-out stage. The best two clubs of group B, C, D, E, F and runner-up of group A and G will qualify to Second round of the knock-out stage.Knock-out stage: A total of 14 clubs which has qualified from the group stage will play single-elimination stage until there are only two finalists of the tournament.
First round
Group A
Group B
Group C
Group D
Group E
Group F
Group G
Second round
Quarter-finals Round
Semi-finals Round
Final round
Central Region
Member clubs
Format
Group stage: A total 54 clubs will be divided into four groups of three clubs except group 18 which has four clubs to play round-robin matches at a neutral venue. The best clubs of group A and G qualify to Quarter-finals round of the knock-out stage. The best clubs of group B, C, E, F, G and H, The best two clubs of group A, D, I, J, K, L, M, N, O, P, Q and R will qualify to third round of the knock-out stage. Runner-up of group E, F, G and H will qualify to second round of the knock-out stage.Knock-out stage: A total of 18 clubs which has qualified from the group stage will play single-elimination stage until there are only two finalists of the tournament.
First round
Group A
Group B
Group C
Group D
Group E
Group F
Group G
Group H
Group I
Group J
Group K
Group L
Group M
Group N
Group O
Group P
Group Q
Group R
Second round
Third round
Fourth round
Quarter-finals Round
Semi-finals Round
Final round
Winner
Southern Region
Member clubs
Venue Stadium and locations (2016)
All matches played in Wiang Sa District, Surat Thani| Coordinates | Location | Stadium | Capacity |
| Wiang Sa District, Surat Thani | Wiang Sa District Stadium | ? |
Qualification format
All four teams played a one-legged round-robin match. The best two teams advanced to the final round, and the winner of the final round was promoted to 2017 Thai Division 2 League.First round
Final round
Winner
Champions list
;Promoted to 2017 Thai League 4| Regional | Winner |
| Northern | Changphueak Chiang Mai |
| North Eastern | Wang Saphung |
| Easthern | Bankhai United |
| Central | Singburi Kopoon |
| Southern | Surat Thani United |