# 1990–91 Gamma Ethniki

The 1990–91 Gamma Ethniki was the eighth season since the official establishment of the third tier of Greek football in 1983. Doxa Vyronas and Naoussa were crowned champions in Southern and Northern Group respectively, thus winning promotion to Beta Ethniki. Egaleo and Trikala also won promotion as a runners-up of the groups.
Olympiakos Loutraki, Ethnikos Asteras, Irodotos, Acharnaikos, Panarkadikos, Lamia, Odysseas Kordelio, Anagennisi Karditsa, Aspida Xanthi and Kilkisiakos were relegated to Delta Ethniki.

## Southern Group
### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Promotion or relegation |
| 1 | Doxa Vyronas (C, P) | 34 | 19 | 9 | 6 | 54 | 28 | +26 | 47 | Promotion to Beta Ethniki |
| 2 | Egaleo (P) | 34 | 15 | 15 | 4 | 40 | 24 | +16 | 45 | Promotion to Beta Ethniki |
| 3 | Kalamata | 34 | 19 | 4 | 11 | 46 | 27 | +19 | 42 | |
| 4 | Ilisiakos | 34 | 16 | 8 | 10 | 38 | 32 | +6 | 40 | |
| 5 | Panetolikos | 34 | 13 | 11 | 10 | 32 | 28 | +4 | 37 | |
| 6 | Sparti | 34 | 14 | 9 | 11 | 34 | 26 | +8 | 37 | |
| 7 | Kallithea | 34 | 14 | 8 | 12 | 30 | 31 | −1 | 36 | |
| 8 | Panelefsiniakos | 34 | 12 | 11 | 11 | 37 | 30 | +7 | 35 | |
| 9 | Paniliakos | 34 | 11 | 12 | 11 | 37 | 31 | +6 | 34 | |
| 10 | Chaidari | 34 | 13 | 7 | 14 | 32 | 30 | +2 | 33 | |
| 11 | Thriamvos | 34 | 11 | 11 | 12 | 37 | 40 | −3 | 33 | |
| 12 | Aris Nikaia | 34 | 11 | 10 | 13 | 34 | 36 | −2 | 32 | |
| 13 | Messolonghi | 34 | 10 | 12 | 12 | 28 | 33 | −5 | 32 | |
| 14 | Olympiakos Loutraki (R) | 34 | 12 | 8 | 14 | 37 | 37 | 0 | 32 | Relegation to Delta Ethniki |
| 15 | Ethnikos Asteras (R) | 34 | 11 | 6 | 17 | 27 | 35 | −8 | 28 | Relegation to Delta Ethniki |
| 16 | Irodotos (R) | 34 | 10 | 8 | 16 | 27 | 32 | −5 | 28 | Relegation to Delta Ethniki |
| 17 | Acharnaikos (R) | 34 | 7 | 10 | 17 | 24 | 51 | −27 | 24 | Relegation to Delta Ethniki |
| 18 | Panarkadikos (R) | 34 | 6 | 5 | 23 | 21 | 54 | −33 | 17 | Relegation to Delta Ethniki |

## Northern Group
### League table

| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Promotion or relegation |
| 1 | Naoussa (C, P) | 34 | 16 | 13 | 5 | 58 | 32 | +26 | 45 | Promotion to Beta Ethniki |
| 2 | Trikala (P) | 34 | 16 | 10 | 8 | 40 | 27 | +13 | 42 | Promotion to Beta Ethniki |
| 3 | Anagennisi Kolindros | 34 | 14 | 11 | 9 | 41 | 28 | +13 | 39 | |
| 4 | Kozani | 34 | 12 | 12 | 10 | 38 | 35 | +3 | 36 | |
| 5 | Asteras Ambelokipoi | 34 | 11 | 12 | 11 | 36 | 27 | +9 | 34 | |
| 6 | Nigrita | 34 | 13 | 8 | 13 | 48 | 46 | +2 | 34 | |
| 7 | Anagennisi Neapoli | 34 | 11 | 12 | 11 | 35 | 36 | −1 | 34 | |
| 8 | Neoi Epivates | 34 | 11 | 12 | 11 | 27 | 28 | −1 | 34 | |
| 9 | Pontioi Veria | 34 | 13 | 8 | 13 | 32 | 35 | −3 | 34 | |
| 10 | Preveza | 34 | 13 | 8 | 13 | 41 | 45 | −4 | 34 | |
| 11 | Anagennisi Chalkidona | 34 | 11 | 12 | 11 | 37 | 42 | −5 | 34 | |
| 12 | Kyriakiou | 34 | 12 | 10 | 12 | 37 | 44 | −7 | 34 | |
| 13 | Niki Volos | 34 | 12 | 9 | 13 | 49 | 41 | +8 | 33 | |
| 14 | Lamia (R) | 34 | 13 | 7 | 14 | 38 | 42 | −4 | 33 | Relegation to Delta Ethniki |
| 15 | Odysseas Kordelio (R) | 34 | 11 | 10 | 13 | 42 | 39 | +3 | 32 | Relegation to Delta Ethniki |
| 16 | Anagennisi Karditsa (R) | 34 | 10 | 10 | 14 | 26 | 36 | −10 | 30 | Relegation to Delta Ethniki |
| 17 | Aspida Xanthi (R) | 34 | 9 | 9 | 16 | 39 | 53 | −14 | 27 | Relegation to Delta Ethniki |
| 18 | Kilkisiakos (R) | 34 | 7 | 9 | 18 | 26 | 54 | −28 | 23 | Relegation to Delta Ethniki |