1986–87 Alpha Ethniki
The 1986–87 Alpha Ethniki was the 51st season of the highest football league of Greece. The season began on 7 September 1986 and ended on 7 June 1987. Olympiacos won their 25th Greek title and their first one in four years. The championship was marked by the strike declared by 12 clubs in the last three matchdays of the championship. As a result, most of the clubs did not come to the last matches of the championship and were punished by deducting 6 points. The clubs that did not joined the strike were Olympiacos, Panathinaikos, OFI and Panionios, which finished at the first four places of the standings.
The point system was: Win: 2 points - Draw: 1 point.
Teams
| Promoted from 1985–86 Beta Ethniki | Relegated from 1985–86 Alpha Ethniki |
| Diagoras Veria | Panserraikos Panachaiki |
League table
Top scorers
| Rank | Player | Club | Goals |
| 1 |  AttendancesOlympiacos drew the highest average home attendance in the 1986–87 Alpha Ethniki. |