2020–21 Thai League 3 Eastern Region

The 2020–21 Thai League 3 Eastern region is a region in the regional stage of the 2020–21 Thai League 3. Due to the COVID-19 pandemic, the season must be postponed to start in late 2020 and end in early 2021. In addition, the Thai League 4 had combined with the Thai League 3 and compete as Thai League 3 since this season and there is no relegation in this season. A total of 12 teams located in Eastern of Thailand will compete in the league of the Eastern region.

In late December 2020, COVID-19 had spread again in Thailand, the FA Thailand must abruptly end the regional stage of the Thai League 3.

Foreign players
A T3 team could register four foreign players by at least one player from AFC member countries. A team can use four foreign players on the field in each game, including at least one player from the AFC member countries (3+1). ↔: players who have dual nationality by half-caste or naturalization. →: players who left club after registered during first or second leg.
 * Note :
 * players who released during winter transfer window;
 * players who registered during winter transfer window;
 * {|class="unsortable"


 * style="width:15px; background:#ffdddd;"| ||Other foreign players.
 * style="width:15px; background:#ffffdd;"| ||AFC quota players.
 * style="width:15px; background:#c8ccd1;"| ||No foreign player registered.
 * }
 * style="width:15px; background:#c8ccd1;"| ||No foreign player registered.
 * }
 * }

Top scorers

 * As of 3 January 2021.

Hat-tricks
Notes: (H) = Home team; (A) = Away team

Clean sheets

 * As of 3 January 2021.