1974–75 Alpha Ethniki
The 1974–75 Alpha Ethniki was the 39th season of the highest football league of Greece. The season began on 29 September 1974 and ended on 8 June 1975. Olympiacos won their third consecutive and 20th Greek title.
The point system was: Win: 2 points - Draw: 1 point.
Teams
| Promoted from 1973–74 Beta Ethniki | Relegated from 1973–74 Alpha Ethniki |
| PAS Giannina Kalamata Atromitos Kastoria | APOEL Fostiras Apollon Athens Apollon Kalamarias |
League table
Top scorers
| Rank | Player | Club | Goals |
| 1 |  |1970AttendancesOlympiacos drew the highest average home attendance in the 1974–75 Alpha Ethniki. |