The 2019–20 Gamma Ethniki was the 37th season since the official establishment of the championship in 1983, but the 1st season as the fourth tier of the Greek Football.It will start on 22 September 2019. After the finish of the eight groups, the first team of each group will qualify for a playoff round of two groups, to determine which two teams will be promoted to Football League. 106 teams are divided into eight groups according to geographical criteria.