Delta Ethniki
Delta Ethniki was the fourth level of Greek football championship. During the period of its existence, it was the lowest national division of the Greek championship. It was founded in the 1982–83 season and abolished in the 2012–13 season, as it was merged with the third division. Its history therefore spans 31 years.
Many historical clubs of first division have played in Delta Ethniki, such as Iraklis, Ethnikos Piraeus, Apollon Smyrnis and Atromitos. The clubs of Delta Ethniki were divided in groups on the basis of geographical criteria. The groups usually comprised 10 teams, though this number varied between 4 and 12 over the years.
Champions
Below follows the list of the champions by year.| Season | Groups | Clubs | Champions |
| 1982–83 | 7 | 137 | A.O. Neapolis Piraeus, P.A.O. Thriamvos Neos Kosmos, Anagennisi Arta, Pannafpliakos, Pontioi Kozani, Polykastro, Aspida Xanthi |
| 1983–84 | 7 | 126 | Aias Salamina, Charavgiakos, Kerkyra, Panarkadikos, P.O. Elassona, Posidonas Nea Michaniona, Iraklis Kavala |
| 1984–85 | 7 | 126 | Ergotelis, Ilioupoli, A.O. Agrinio, Kalamata, Achilleas Farsala, A.E. Alexandria, Panthrakikos |
| 1985–86 | 7 | 131 | Peramaikos, Olympiacos Chalkida, A.P.S. Patra, Panargiakos, Pyrsos Grevena, Megas Alexandros Thessaloniki, Nestos Chrisoupoli |
| 1986–87 | 7 | 130 | Aris Nikaia, Enosi Atromitou-Rethymniakou, Messiniakos, Achaiki, Anagennisi Kolindros, Anagennisi Neapoli Thessaloniki, Pandramaikos |
| 1987–88 | 4 | 73 | Achilleas Farsala, Asteras Ampelokipoi, A.O. Sparti, P.A.O. Thriamvos |
| 1988–89 | 4 | 70 | Pontioi Veria, Anagennisi Giannitsa, Panetolikos, Rodos |
| 1989–90 | 6 | 116 | Aspida Xanthi, Anagennisi Chalkidona, Lamia, Paniliakos, Aris Nikaia, Haidari |
| 1990–91 | 10 | 218 | Pandramaikos, Posidonas Nea Michaniona, Panargiakos Argos Orestiko, A.P.S. Patra, Apollon Larissa, Fostiras, Rodos, Pannafpliakos, Anagennisi Arta, Posidonas Iraklio |
| 1991–92 | 12 | 231 | Irodotos, Aiolikos, Ethnikos Asteras, Chalkida, Panarkadikos, Fokikos, Kerkyra, Anagennisi Karditsa, Kilkisiakos, Odysseas Kordelio, Pontioi Kozani, Ethnikos Alexandroupoli |
| 1992–93 | 12 | 217 | Chania, Ialysos, Acharnaikos, Keratsini, Erani Filiatra, A.P.S. Patra, Velissarios Ioannina, Niki Volos, Apollon Krya Vrysi, Keravnos Kolchiko, Iraklis Ptolemaida, Nestos Chrisoupoli |
| 1993–94 | 12 | 215 | Agios Nikolaos, Varvasiakos Chios, Fostiras, Chalkida, AO Sparti, A.E.Messolonghi, PAS Acheron Kanallaki, Lamia, Almopos Aridaea, Agrotikos Asteras, Tyrnavos, Orestis Orestiada |
| 1994–95 | 8 | 146 | Enosi Rodou-Diagoras, A.O. Marko, A.O. Pyrgos 79, Panegialios, Fokikos, Kozani, Ampelokipi Thessaloniki, Nigrita |
| 1995–96 | 6 | 110 | Egaleo, Ergotelis, Nafpaktiakos Asteras, Kerkyra F.C., Iraklis Ptolemaidas, Lykoi |
| 1996–97 | 6 | 108 | Agia Eleousa, Keratsini, Pamisos Messini, Preveza, Kozani, Orfeas Alexandroupoli |
| 1997–98 | 6 | 107 | Atromitos, Argesani Naxos, Achaiki, Karditsa, Apollon Krya Vrysi, Kilkisiakos |
| 1998–99 | 6 | 108 | Akratitos, Chalkidona, Leonidio, Thesprotos, Ethnikos Katerini, A.S. Neapolis Thessaloniki |
| 1999–2000 | 4 | 64 | Acharnaikos, Patraikos Patra, Lamia, Ampelokipi Thessaloniki |
| 2000–01 | 4 | 64 | Fostiras, Chania, Kerkyra, Kassandria |
| 2001–02 | 4 | 65 | Thrasyvoulos, Levadiakos, Niki Volos, Agrotikos Asteras |
| 2002–03 | 10 | 159 | Doxa Drama, Pontiakos Nea Santa, Veria, Pierikos, Averof Ioannina, Chalkida, Rodos, Ilisiakos, Thyella Patra, Atsalenios |
| 2003–04 | 10 | 159 | Pandramaikos, Thermaikos, Kozani, Apollon Larissa, Panetolikos, Lamia, A.O. Mani Piraeus, Haidari, Achaiki, Irodotos |
| 2004–05 | 10 | 153 | Panthrakikos, Polykastro, Pierikos, Trikala, AE Giannena, Messiniakos, Diagoras, Aiolikos, Asteras Tripoli, Ionia Chania |
| 2005–06 | 10 | 159 | Doxa Gratini, PAO Neoi Epivates, Ethnikos Katerini, Odysseas Androutsos, Nafpaktiakos Asteras, Zakynthos, Thiva, Ilioupoli, Koropi, O.F. Ierapetra |
| 2006–07 | 10 | 156 | Prosotsani, Anagennisi Giannitsa, Ptolemaida-Lignitorychoi, Olympiakos Volos, Preveza, Panegialios, Korinthos, Fostiras, Aias Salamina, Neos Asteras Rethymno |
| 2007–08 | 10 | 160 | Odysseas Anagennisi, Makedonikos, Pyrsos, Fokikos, Ethnikos Filippiada, Zakynthos, Panargiakos, Agia Paraskevi, Keravnos Keratea, Chersonissos |
| 2008–09 | 10 | 161 | Visaltiakos Nigrita, Anagennisi Epanomi, Kozani, Trikala, Doxa Kranoula, Panegialios, Enosi Panaspropyrgiakou Doxas, Rouf, Saronikos, Platanias |
| 2009–10 | 10 | 161 | Megas Alexandros Irakleia Serres, Aetos Skydra, Pontioi Katerini, Tyrnavos, Nafpaktiakos Asteras, Paniliakos, Iraklis Psachna, Apollon Smyrni, AEL Kalloni, Chania |
| 2010–11 | 10 | 157 | Ethnikos Gazoros, Apollon Kalamarias, Vataniakos, Oikonomos Tsaritsani, Tilikratis, Kalamata, Asteras Magoula, PAOK Glyfada, Proodeftiki, Rouvas |
| 2011–12 | 10 | 141 | Ethnikos Sidirokastro, Odysseas Kordelio, Platamon Academy, Anagennisi Karditsa, Kassiopi, Panegialios, Korinthos, Fostiras, Acharnaikos, Episkopi |
| 2012–13 | 10 | 107 | Aris Akropotamos, Iraklis Ambelokipi, Kozani, Lamia, A.E.Messolonghi, Panopoulo F.C., A.E. Ermionida, Egaleo, Ionikos, Atsalenios |
Performance by club (1982–2013)
Seasons in Delta Ethniki
Too many clubs have played in the championship of Delta Ethniki during the years that existed. Below follows a list with the clubs with the most number of seasons in Delta Ethniki.| Club | Seasons |
| A.O. Karditsa | 28 |
| Achaiki | 26 |
| Preveza, Asteras Amaliadas, Pamisos Messini | 25 |
| Atsalenios | 24 |
| Apollon Larissa | 22 |
| Tilikratis, Nestos Chrysoupoli | 21 |
| Moshato, Aetos Skydra, Pandramaikos | 20 |