2003–04 Alpha Ethniki
The 2003–04 Alpha Ethniki was the 68th season of the highest football league of Greece. The season began on 23 August 2003 and ended on 22 May 2004. Panathinaikos won their 19th Greek title and their first one in eight years.
Teams
Stadia and personnel
| Team | Manager1 | Location | Stadium | Capacity |
| AEK Athens |  Dušan Bajević | Athens | Various2 | |
| Akratitos |  Babis Tennes | Athens | Yiannis Pathiakakis Stadium | 4,944 |
| Aris | Makis Katsavakis | Thessaloniki | Kleanthis Vikelidis Stadium | 23,220 |
| Chalkidona | Georgios Paraschos | Athens | Peristeri Stadium | 9,035 |
| Egaleo | Georgios Chatzaras | Athens | Stavros Mavrothalassitis Stadium | 8,217 |
| Ionikos | Vangelis Vlachos | Piraeus | Neapoli Stadium | 4,999 |
| Iraklis |  Eugène Gerards | Thessaloniki | Makedonikos Stadium | 8,100 |
| Kallithea | Takis Lemonis | Kallithea | Grigoris Lambrakis Stadium | 4,250 |
| OFI | Giorgos Foiros | Heraklion | Theodoros Vardinogiannis Stadium | 9,000 |
| Olympiacos |  Oleh Protasov | Piraeus | Georgios Kamaras Stadium | 14,856 |
| Panathinaikos |  Itzhak Shum | Athens | Apostolos Nikolaidis Stadium | 16,620 |
| Paniliakos | Sakis Tsiolis | Pyrgos | Pyrgos Stadium | 6,750 |
| Panionios |  Jozef Bubenko | Nea Smyrni | Nea Smyrni Stadium | 11,756 |
| PAOK | Angelos Anastasiadis | Thessaloniki | Toumba Stadium | 28,803 |
| Proodeftiki | Soulis Papadopoulos | Piraeus | Nikaia Municipal Stadium | 5,000 |
| Skoda Xanthi | Nikos Karageorgiou | Xanthi | Xanthi Ground | 9,500 |
- 1 On final match day of the season, played on 22 May 2004.
- 2 AEK Athens were played the home matches at the various stadiums in Attica due to the demolition of Nikos Goumas Stadium and the renovation of Athens Olympic Stadium.
League standings
Results
Promotion/Relegation Play-Off
Played at a neutral venue, between the 14th-place team in the Alpha Ethniki and the 3rd-place team in the Beta Ethniki.Ergotelis replace Akratitos in Alpha Ethniki
Top goalscorers
Source:| Rank | Player | Club | Goals |
| 1 |  Giovanni | Olympiacos | 21 |
| 2 |  Dimitris Papadopoulos | Panathinaikos | 17 |
| 3 | Dimitris Salpingidis | PAOK | 16 |
| 4 | Giorgos Zaharopoulos | Chalkidona | 13 |
| 4 | Theofanis Gekas | Kallithea | 13 |
| 6 | Nikos Liberopoulos | AEK Athens | 12 |
| 6 | Nikos Skarmoutsos | Kallithea | 12 |
| 8 | Nikos Machlas | OFI | 11 |
| 8 | Vassilis Lakis | AEK Athens | 11 |
| 8 |  Predrag Đorđević | Olympiacos | 11 |