The 2015 Regional League Division 2 (also known as the AIS Regional League Division 2 for sponsorship reasons) was the 10th season of the Regional League Division 2. It had redirected from the division 2, since its establishment in 2006. The 83 clubs in Thailand will be divided into 6 groups (regions)
<span style="color:red;">red Zone : 2015 Regional League Division 2 Bangkok Metropolitan Region</span><br> <span style="color:#ffff00;">Yellow Zone : 2015 Regional League Division 2 Central & Eastern Region</span><br> <span style="color:#ffc0cb;">Pink Zone: 2015 Regional League Division 2 Central & Western Region</span><br> <span style="color:#008000;">Green Zone: 2015 Regional League Division 2 Northern Region</span><br> <span style="color:Orange;"> Orange Zone: 2015 Regional League Division 2 North Eastern Region</span><br> <span style="color:blue;">Blue Zone: 2015 Regional League Division 2 Southern Region</span><br>
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Ubon UMT United won 9âÂÂ0 on aggregate.
The Regional Division 2 2015 winners were Ubon UMT United F.C.