The 2008–09 Greek Basket League season was the 69th season of the Greek Basket League, the highest tier professional basketball league in Greece.

The 182-game regular season (26 games for each of the 14 teams) began on Saturday, October 4, 2008, and ended on Sunday, May 10, 2009.

[1][2][3][4] The playoffs ended on June 3, 2009.

Pts=Points, Pld=Matches played, W=Matches won, L=Matches lost, F=Points for, A=Points against, D=Points difference Results as of December 19, 2008[5] This is the outlook for the 2009 Α1 playoffs.

Teams in bold advance to the next round.