| Season: | 2016 |
| Prevseason: | None |
| Nextseason: | (T4)2017 → (TA)2017 |
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.
| Section | Club | province | Years | |
|---|---|---|---|---|
| 1 | Uttaradit | 2016 | ||
| 1 | Phitsanulok | 2016 | ||
| 1 | Amnuaysilpa Alumni (Thai: สมาคมนักเรียนเก่าอำนวยศิลป์) | Bangkok | 2016 | |
| 2 | Institution of Physical Education Chiang Mai Campus (Thai: สถาบันการพลศึกษา วิทยาเขตเชียงใหม่) | Chiang Mai | 2016 | |
| 2 | Northern Tak United | Tak | 2016 | |
| 2 | Chai Nat | 2016 | ||
| 3 | Prachum Nongcheck (Thai: สโมสรประชุมน้องเชค) | Suphanburi | 2016 | |
| 3 | Tak | 2016 | ||
| 3 | Chiang Mai | 2016 | ||
| 4 | Nong Bua Lamphu | 2016 | ||
| 4 | Chiangrai Wonderkid for AEC (Thai: เชียงรายวันเดอร์ คิด ฟอร์ เออีซี) | Chiangrai | 2016 | |
| 4 | Phetchabun (Thai: สมาคมกีฬาฟุตบอลจังหวัดเพชรบูรณ์) | Phetchabun | 2016 | |
| 4 | Chiang Mai | 2016 |
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.
| Section | Club | province | Years |
|---|---|---|---|
| 1 | 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 |
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.
| Section | Club | Province | Years | |
|---|---|---|---|---|
| 1 | Chonburi | 2016 | ||
| 1 | Navanakorn | Pathum Thani | 2016 | |
| 1 | Assumption College Sriracha | Chonburi | 2016 | |
| 2 | Na-Me United | Bangkok | 2016 | |
| 2 | Siriroj | Chonburi | 2016 | |
| 2 | Khaobaisri | Rayong | 2016 | |
| 3 | Traf Maptaphut | Rayong | 2016 | |
| 3 | Bankhai United | Rayong | 2016 | |
| 3 | Takhiantia | Chonburi | 2016 | |
| 4 | Hakka Association of Thailand | Bangkok | 2016 | |
| 4 | Kohkwang Subdistrict Municipality | Chanthaburi | 2016 | |
| 4 | Pattana | Chonburi | 2016 | |
| 5 | Rayong City | Rayong | 2016 | |
| 5 | Isan Pattaya | Chonburi | 2016 | |
| 5 | Banbung Rovers | Chonburi | 2016 | |
| 6 | Sansuk Municipality Meangkanyang | Chonburi | 2016 | |
| 6 | Pak Chong City | Nakhon Ratchasima | 2016 | |
| 6 | Bangpakong Sports Association | Chachoengsao | 2016 | |
| 7 | Institute of Physical Education Chonburi | Chonburi | 2016 | |
| 7 | Pattaya City Club | Chonburi | 2016 | |
| 7 | Salaeng Subdistrict Municipality | Chanthaburi | 2016 |
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.
| Group | Club | Province | Years |
|---|---|---|---|
| 1 | Bangkok | 2016 | |
| 1 | Nongkhae | Nakhon Nayok | 2016 |
| 1 | Krirk University | Bangkok | 2016 |
| 2 | Tan Diao TAO | Saraburi | 2016 |
| 2 | Mahidol University Sport Science | Bangkok | 2016 |
| 2 | Air Technical Training School | Bangkok | 2016 |
| 3 | Metropolitan Electricity Authority | Bangkok | 2016 |
| 3 | Ayodhya City | Ayutthaya | 2016 |
| 3 | Klongluang Rockyrose | Pathum Thani | 2016 |
| 4 | DHL All Stars | Bangkok | 2016 |
| 4 | Laem Sing Fisheries Association | Chanthaburi | 2016 |
| 4 | Bang Mueang Municipality | Samut Prakan | 2016 |
| 5 | Ratchadamnoen Commercial School | Bangkok | 2016 |
| 5 | Donmuang Police Station | Bangkok | 2016 |
| 5 | Jim Thompson Farm | Nakhon Ratchasima | 2016 |
| 6 | Vongchavalitkul University | Nakhon Ratchasima | 2016 |
| 6 | Dhurakij Pundit University | Bangkok | 2016 |
| 6 | Samutsakhonwittayalai School | Samut Sakhon | 2016 |
| 7 | Traill International school | Bangkok | 2016 |
| 7 | Angthong United | Ang Thong | 2016 |
| 7 | Playmaker United | Bangkok | 2016 |
| 8 | Therdthai Diamond | Bangkok | 2016 |
| 8 | Wat Suthiwararam Alumni Association | Bangkok | 2016 |
| 8 | Naval Medical Department | Bangkok | 2016 |
| 9 | Sing Ubon | Ubon Ratchathani | 2016 |
| 9 | Debsirin Alumni Association | Bangkok | 2016 |
| 9 | New Bridge Thonglor | Bangkok | 2016 |
| 10 | Yingcharoen | Nonthaburi | 2016 |
| 10 | King Mongkut's University of Technology North Bangkok | Bangkok | 2016 |
| 10 | Dontan PCCM | Mukdahan | 2016 |
| 11 | Chandrakasem Rajabhat University | Bangkok | 2016 |
| 11 | Royal Thai Air Force Welfare Department | Bangkok | 2016 |
| 11 | KrungKao | Ayutthaya | 2016 |
| 12 | Bang Pa-In School | Ayutthaya | 2016 |
| 12 | Royal Thai Air Force Academy | Bangkok | 2016 |
| 12 | Bangplub | Nonthaburi | 2016 |
| 13 | Singburi United | Sing Buri | 2016 |
| 13 | Bansomdejchaopraya Rajabhat University | Bangkok | 2016 |
| 13 | Tanmananusorn Foundation | Bangkok | 2016 |
| 14 | Ramkhamhaeng University | Bangkok | 2016 |
| 14 | Pichaya Kasem Technological College | Bangkok | 2016 |
| 14 | Mahanakorn | Bangkok | 2016 |
| 15 | Nakornpathom Rajabhat University | Nakhon Pathom | 2016 |
| 15 | Forester | Bangkok | 2016 |
| 15 | Petchchaiyapruek | Bangkok | 2016 |
| 16 | Uthenthawai | Bangkok | 2016 |
| 16 | Lumplee Subdistrict Municipality | Ayutthaya | 2016 |
| 16 | Kasetsart University Kamphaeng Saen Campus | Nakhon Pathom | 2016 |
| 17 | Phon Commercial and Technical College | Khon Kaen | 2016 |
| 17 | Wangpailom SC | Bangkok | 2016 |
| 17 | SWU United | Bangkok | 2016 |
| 17 | Wat Suthiwararam School | Bangkok | 2016 |
| 18 | Ratchaburi NNK BPF United | Ratchaburi | 2016 |
| 18 | Singburi Kopoon | Singburi | 2016 |
| 18 | Rajamangala University Of Technology Rattanakosin | Bangkok | 2016 |
| 18 | Bangpla CCP | Samut Prakan | 2016 |
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.
| Section | Club | province | Years | |
|---|---|---|---|---|
| 1 | Nakhon Si Thammarat | 2016 | ||
| 1 | Sungaipadee | Narathiwat | 2016 | |
| 1 | Surat Thani United | Surat Thani | 2016 | |
| 1 | Newball Satun | Satun | 2016 |
All matches played in Wiang Sa District, Surat Thani
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.
| Regional | Winner | |
| Northern | Changphueak Chiang Mai | |
| North Eastern | Wang Saphung | |
| Easthern | Bankhai United | |
| Central | Singburi Kopoon | |
| Southern | Surat Thani United |