2018 Thai League 4 Eastern Region is the 9th season of the League competition since its establishment in 2009. It is in the fourth tier of the Thai football league system.
Promoted from the 2017 Thailand Amateur League Eastern Region
Promoted to the 2018 Thai League 3 Upper Region
Relegated to the 2018 Thailand Amateur League Eastern Region
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In the third leg, the winner on head-to-head result of the first and the second leg will be home team. If head-to-head result are tie, must to find the home team from head-to-head goals different. If all of head-to-head still tie, must to find the home team from penalty kickoff on the end of each second leg match (This penalty kickoff don't bring to calculate points on league table, it's only the process to find the home team on third leg).
<small>Source: Thai League 4</small><br /> <small>Note:</small><br /><small> Pattaya United U-23 don't play Nakhon Nayok vs Pattaya United U-23 game. PLT judge this game to Nakhon Nayok win 2 - 0.</small><br /> <small> Some error of T4 official match report 20 May 2018 (Chonburi U-23 0âÂÂ0 Chanthaburi).</small>