The 2020–21 Gamma Ethniki was the 38th season since the official establishment of the championship in 1983, but the 2nd season as the fourth tier of the Greek Football. It started on 11 October 2020 but put on hold from the Greek government due to the COVID-19 pandemic on 1 November 2020. It restarted on 11 April 2021, with the group stage being completed after its first round. The champions of each group then qualified for a playoff round, to determine which four teams would be promoted to 2021–22 Super League 2.
136 teams were divided into ten groups according to geographical criteria.
Doxa Kato Kamila, Souli Paramythia, Thinaliakos, AO Anatoli, PAS Kithairon Kaparelli, Sparti and Panakrotiriakos withdrew from the league before the group draw.
Group 1 Teams
Team Location Last season Nestos Chrysoupoli Chrysoupoli Apollon Paralimnio Paralimnio Aetos Orfano Ofrynio Pandramaikos Drama Aris Avato Avato Alexandroupoli Alexandroupoli Orfeas Xanthi Xanthi A.E. Didymoteicho Didymoteicho Doxa Neo Sidirochori Neo Sidirochori Elpis Sapes Sapes Anagennisi Thalassia Thalassia Megas Alexandros Orfani Orfani A.E. Ampelokipi Drama Drama (Ampelokipi neighborhood) Ethnikos Sochos Sochos A.E. Evosmos Evosmos Iraklis Thessaloniki
Standings
Group 2 Teams
Team Location Last season Poseidon Michaniona Michaniona Anagennisi Giannitsa Giannitsa Makedonikos Efkarpia Edessaikos Edessa Thermaikos Thermi Thyella Sarakinoi Sarakinoi Agrotikos Asteras Evosmos Megas Alexandros Trikala Langadas Nea Kallikrateia Kallikrateia Niki Agathia Agkathia PAO Koufalia Koufalia Ethnikos Giannitsa Giannitsa Aetos Varvara Varvara PAOK Alexandreia Alexandreia Anagennisi Plagia Plagia
Standings
Group 3 Teams
Team Location Last season A.E. Karitsa Karitsa Iraklis Larissa Larissa Atromitos Palamas Palamas AO Sellana Sellana Meteora Meteora Oikonomos Tsaritsani Tsaritsani Dias Dion Dion Makedonikos Foufas Foufas Ethnikos Neo Keramidi Neo Keramidi Anagennisi Karditsa Karditsa Aetos Makrychori Makrychori P.O. Elassona Elassona P.O. Fiki Fiki Ermis Amyntaio Amyntaio Kozani Kozani
Standings
Group 4 Teams
Team Location Last season Theseus Agria Agria Almyros Almyros A.P.O. Atalanti Atalanti Diagoras Stefanovikeio Stefanovikeio AO Ypato Ypato AO Nea Artaki Nea Artaki Opountios Martino Amvrysseas Distomo Iraklis Psachna Psachna Fokikos Amfissa Dimitra Efxeinoupoli Efxeinoupoli
Standings
Group 5 Teams
Team Location Last season Kerkyra Corfu Anagennisi Arta Arta PAS Acheron Kanallaki Kanallaki Tilikratis Lefkada AE Messolonghi Messolonghi A.E. Lefkimmi Lefkimmi PAS Preveza Igoumenitsa O.F.A.M. Ágios Matthaíos Thyella Katsikas Katsikas Amvrakikos Loutro Loutro Panagriniakos Agrinio Pas Thyella 2015 Monastiraki Asteras Kalirachi Kalirachi Megas Alexandros Kallithea Kastoria (Kallithea neighborhood)
Standings
Group 6 Teams
Team Location Last season Panionios Nea Smyrni Fostiras Tavros AE Moschato Moschato Ethnikos Piraeus Piraeus Mykonos Mykonos as AS Ano Mera Mykonos Marko Markopoulo Aittitos Spata Spata Pannaxiakos Naxos Proodeftiki Moschato Charavgiakos Ilioupoli Ilioupoli Ilioupoli
Standings
Group 7 Teams
Team Location Last season Agios Ierotheos Peristeri A.E. Kifisia Kifisia Panarkadikos Tripoli Nafplio 2017 Nafplio Enosi Ermionida Kranidi Pangytheatikos Gytheio P.A.O. Rouf Rouf Ermis Meligou Meligou Aris Skala Skala OFM Molaikos Molaoi Atromitos Chiliomodi Chiliomodi Koronida Koilada Koilada Foinikas Nea Epidavros Nea Epidavros
Standings
Group 8 Teams
Team Location Last season Keratsini Keratsini Akratitos Ano Liosia Thyella Rafina Rafina (Diastavrosi neighborhood) Aiolikos Mytilene Kyanos Asteras Vari Vari Aias Salamina Salamina A.O. Karavas Piraeus (Karavas neighborhood) Panelefsiniakos Eleusis A.O. Pyli Kos Pyli Aetos Loutra Loutra A.PS.E.S. Pythagoras Kontakeika A.P.E. Mikrasiatiki Chios
Standings
Group 9 Teams
Team Location Last season Nafpaktiakos Asteras Nafpaktos Zakynthos Zakynthos PAO Varda Varda A.O. Tsilivi Planos A.O. Diavolitsi Diavolitsi Thyella Patras Patras Diagoras Vrachnaiika Vrachnaiika Aias Gastouni Gastouni Pamisos Messini Messini Ethnikos Skoulikado Skoulikado Panegialios Aigio Achaiki Kato Achaia Pallixouriakos Lixouri
Standings
Group 10 Teams
Team Location Last season Platanias Platanias Giouchtas Archanes Irodotos Heraklion (Nea Alikarnassos neighborhood) Atsalenios Heraklion (Atsalenio neighborhood) AO Agios Nikolaos Agios Nikolaos AEEK SYN.KA Chania AO Poros Heraklion (Poros neighborhood) A.E. Neapoli Neapoli Anagennisi Ierapetra Ierapetra Neos Asteras Rethymno Rethymno Aris Rethymno Rethymno Aris Souda Souda Paleochora Palaiochora A.O. Damasta Damasta G.P.S. Almyros Gazi Gazi
Standings
Promotion Playoffs Group 1
The five champion teams from first 5 groups will meet once (4 matches per team) for two places in Super League 2. <onlyinclude>
Group 2
The five champion teams from group 6 to 10 will meet once (4 matches per team) for two places in Super League 2.
References