2018–19 Gamma Ethniki
The 2018–19 Gamma Ethniki is the 36th season since the official establishment of the third tier of Greek football in 1983.
It start on 30 September 2018. This year 12 teams will be promoted. After the finish of the eight groups, the first team of each group will be promoted to Football League and then the 8 runner-up teams after draw will play two legs to determine which four teams will be promoted.
107 teams are divided into eight groups according to geographical criteria.
Neos Amfilochos, Doxa Kranoula, APO Kanaris Nenita, AO Panthyreatikos, AO Potamia Megalo Chorio, AE Vathyllou Pansamiakou and Aigiros Mystegnon withdrew from the league before the group draw.
Group 1
Teams
| Team | Location | Last season |
| Nestos Chrysoupoli | Chrysoupoli | |
| Orfeas Xanthi | Xanthi | |
| Kavala | Kavala | |
| Apollon Paralimnio | Paralimnio | |
| Aetos Orfano | Ofrynio | |
| Aris Avato | Avato | |
| Panserraikos | Serres | |
| Ethnikos Alexandroupoli | Alexandroupoli | |
| PAOK Kosmio | Kosmio | |
| Aspis Xanthi | Xanthi | |
| Keravnos Perni | Perni | |
| Ethnikos Sidirokastro | Sidirokastro | |
| AE Kalampaki | Kalampaki | |
| Alexandros Kilkis | Kilkis |
Standings
Group 2
Teams
| Team | Location | Last season |
| APE Langadas | Langadas | |
| Almopos Aridea | Aridaea | |
| Makedonikos | Efkarpia | |
| Agrotikos Asteras | Evosmos | |
| Edessaikos | Edessa | |
| Aris Palaiochori | Palaiochori | |
| Ermis Amyntaio | Amyntaio | |
| Veria | Veria | |
| PAO Koufalia | Koufalia | |
| Olympiakos Kymina | Kymina | |
| Giannitsa | Giannitsa | |
| Niki Agathia | Agkathia | |
| Meliteas Meliti | Meliti | |
| Triglia | Triglia |
Standings
Group 3
Teams
| Team | Location | Last season |
| Thesprotos | Igoumenitsa | |
| Tilikratis | Lefkada | |
| Makedonikos Foufas | Foufas | |
| AE Lefkimmi | Lefkimmi | |
| Megas Alexandros Kallithea | Kastoria | |
| Thriamvos Serviana | Serviana | |
| Makedonikos Siatista | Siatista | |
| PAS Acheron Kanallaki | Kanallaki | |
| Grevena Aerata | Grevena | |
| Souli Paramythia | Paramythia | |
| Kronos Argyrades | Argyrades | |
| Nafpaktiakos Asteras | Nafpaktos |
Standings
Group 4
Teams
| Team | Location | Last season |
| Niki Volos | Nea Ionia Volos | |
| Olympiacos Volos | Volos | |
| Almyros | Almyros | |
| Asteras Itea | Itea | |
| AO Sellana | Sellana | |
| Pierikos | Katerini | |
| AO Stylida | Stylida | |
| Oikonomos Tsaritsani | Tsaritsani | |
| Meteora | Kalabaka | |
| Theseus Agria | Agria | |
| Fokikos | Amfissa | |
| Achilleas Neokaisareia | Neokaisareia | |
| Apollon Makrychori | Makrychori |
Standings
Group 5
Teams
| Team | Location | Last season |
| Ionikos | Nikaia | |
| Ethnikos Piraeus | Piraeus | |
| Proodeftiki | Nikaia | |
| Keratsini | Keratsini | |
| OF Ierapetra | Ierapetra | |
| Atsalenios | Heraklion | |
| Palaiochora | Palaiochora | |
| Atromitos Piraeus | Piraeus | |
| Ampelakiakos | Ampelakia | |
| AE Neapoli | Neapoli | |
| Giouchtas | Archanes | |
| Episkopi | Episkopi | |
| AEEK SYN.KA | Chania |
Standings
Group 6
Teams
| Team | Location | Last season |
| Diagoras Vrachnaiika | Vrachnaiika | |
| Asteras Amaliada | Amaliada | |
| Paniliakos | Pyrgos | |
| PAO Varda | Varda | |
| Diagoras | Rhodes | |
| Ialysos | Ialysos | |
| Thyella Rafina | Rafina | |
| Acharnaikos | Acharnes | |
| Panegialios | Aigio | |
| Phoebus Kremasti | Kremasti | |
| Palliniakos | Pallini | |
| Panmovriakos | Riolos | |
| Niki Tragano | Tragano |
Standings
Group 7
Teams
| Team | Location | Last season |
| Chalkida | Chalkida | |
| Panthiraikos | Santorini | |
| Aiolikos | Mytilene | |
| Egaleo | Egaleo | |
| Ilisiakos | Zografou | |
| Agios Ierotheos | Peristeri | |
| Kallithea | Kallithea | |
| Agioi Anargyroi | Agioi Anargyroi | |
| Charaviakos | Ilioupoli | |
| Apollon Eretria | Eretria | |
| PAS Korinthos | Corinth | |
| Thyella Kamari | Kamari |
Standings
Group 8
Teams
| Team | Location | Last season |
| Kalamata | Kalamata | |
| Asteras Vlachioti | Vlachioti | |
| Panarkadikos | Tripoli | |
| APO Amvrysseas | Distomo | |
| Enosi Panaspropyrgiakou Doxas | Aspropyrgos | |
| Enosi Ermionida | Kranidi | |
| Panargiakos | Argos | |
| AOK Zakynthos | Katastari | |
| AO Eikosimias | Vlachata | |
| Pamisos Messini | Messini | |
| AE Pellana | Pellana | |
| Enosi Lerna | Lerna | |
| Mandraikos | Mandra | |
| AO Ypato | Ypato |