 |
| Founded | 2009 |
|---|---|
| Folded | 2017 |
| Country |  Thailand |
| Number of clubs | 16 |
| Level on pyramid | 4 |
| Promotion to | Thai Division 1 League |
| Last champions | Ubon UMT United (2015) |
| Website | http://www.d2.in.th |
| Current: 2016 Season | |
Regional League Championships are contested by the five regional league winners of the 3rd level championships of Thailand.
Five teams meet on a home and away basis, with the top three teams getting promotion to the Thai 1st Division.
The 1st ever edition was played in 2009 by the following regional league winners; Chiangrai United, Raj Pracha-Nonthaburi, Narathiwat, Loei City and Samut Prakan.
Raj Pracha-Nonthaburi duly won the first ever championship and were followed by early pace setters Chiangrai United, who tended to stall once promotion was achieved and deep south team Narathiwat who claimed promotion in the deciding game in a 0-0 draw with Samut Prakan who also could have achieved promotion going into the last match day.
| Year | Important Events | Participating Clubs |
|---|---|---|
| 2009 |
| 5 |
| 2016 |
| 16 |
| # | Season | Winner | Runner up | Third place | Fourth Place |
|---|---|---|---|---|---|
| 1 | 2009 | Raj Pracha-Nonthaburi | Chiangrai United | Narathiwat | |
| 2 | 2010 | Buriram | Phuket | Chiangmai | Chainat |
| 3 | 2011 | Ratchaburi | Nakhon Ratchasima | Phattalung | Krabi |
| 4 | 2012 | Ayutthaya | Trat | Rayong | Rayong United |
| 5 | 2013 | Roi Et United | Chiangmai | Phitsanulok | Ang Thong |
| 6 | 2014 | Prachuap Khiri Khan | Thai Honda | Sukhothai | Phichit |
| 7 | 2015 | Ubon UMT United | Satun United | Khonkaen United | Rayong |
| National teams |
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| League system |
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| Domestic cups |
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| Reserve and Academy |
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| Continental cups |
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| Exhibition game |
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| Lists | |||||||||
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