[1] Only for Group 8 after the end of the regular season will be held play-off and play-out games.
The top four teams will participate in the play-off round and the first team will be the champion of the group and will be qualifying to 2019–20 Gamma Ethniki play-offs second group.
The last five teams will participate in play-out games and the last will be relegated.
[2] Iraklis, Aiginiakos, Sparta, Alexandros Kilkis, Orestis Orestiada, Megas Alexandros Iasmos, and AOK Zakynthos[1] withdrew from the league before the group draw.
On 29 April 2020 the HFF announced their decision to end the championship of Gamma Ethniki.