The following clubs are competing in II liiga North/East during the 2018 season.
The following clubs are competing in III liiga South during the 2018 season.
The following clubs are competing in III liiga East during the 2018 season.
The following clubs are competing in III liiga West during the 2018 season.
"Kolmanda liiga võitjaks tuli Põhja-Sakala (Summary of the season)" (in Estonian).