2015–16 Gamma Ethniki
The 2015–16 Gamma Ethniki was the 33rd season since the official establishment of the third tier of Greek football in 1983.
It started on 27 September 2015 and ended on 8 May 2016.
64 teams were separated into four groups, according to geographical criteria.
Zakynthiakos and Paniliakos withdrew from the league before the group draw.Group 1
Teams
Standings
Group 2
Teams
| Team | Location | Last season |
| Pydna Kitros | Kitros | |
| Pierikos | Katerini | |
| Oikonomos | Tsaritsani | |
| Dotieas Agia | Agia | |
| Ethnikos Filippiada | Filippiada | |
| Aiginiakos | Aiginio | |
| Thesprotos | Igoumenitsa | |
| A.E. Karaiskakis | Arta | |
| Acheron Kanallaki | Kanallaki | |
| A.E. Farkadona | Farkadona | |
| Achilleas Neokaisareia | Neokaisareia | |
| Niki Volos | Nea Ionia Volos | |
| Rigas Feraios | Velestino | |
| Pyrasos | Nea Anchialos | |
| Tyrnavos | Tyrnavos | |
| Opountios | Martino | |
Fokikos | Amfissa | |
Standings
Group 3
Teams
Standings
Group 4
Teams
| Team | Location | Last season |
| A.E. Irakleio | Irakleio | |
| Fostiras | Tavros | |
| P.A.O. Krousonas | Krousonas | |
| Ermis Zoniana | Zoniana | |
| AO Trachones Alimos | Alimos | |
| OFI | Heraklion | |
| Glyfada | Glyfada | |
| Ilisiakos | Zografou | |
| A.E. Kifisia | Kifisia | |
| Triglia Rafina | Rafina | |
| Asteras Vari | Vari | |
| Atromitos Piraeus | Piraeus | |
| Ethnikos Piraeus | Piraeus | |
| Ionikos | Nikaia | |
| Episkopi | Rethimno | |
| Ialysos | Ialysos | |
Standings
