The 1988–89 Alpha Ethniki was the 53rd season of the highest football league of Greece.
The season began on 11 September 1988 and ended on 21 May 1989.
AEK Athens won their eighth Greek title and their first one in ten years.
The championship was decided on the penultimate matchday in an informal final when AEK defeated the host Olympiakos at the Olympic Stadium by 1–0 with a goal by Takis Karagiozopoulos.
[1] This match, which essentially decided the title, was met by the very serious incidents between police forces and fans, with dozens injured, more than 7,000 seats broken and damages of 30 million drachmas.