The 2009–10 Greek Basket League season was the 70th season of the Greek Basket League, the highest tier professional basketball league in Greece. The winner was Panathinaikos that won Olympiacos in the finals of the championship.
Teams in italics had home advantage. Teams in bold won the playoff series. Numbers to the left of each team indicate the team's original playoff seeding. Numbers to the right indicate the score of each playoff game. ==Final league standings==
Greek Basket League stats leaders are counted by totals, rather than averages, and include both regular season. PointsReboundsAssistsStealsBlocks Source: ==Clubs in international competitions==