Olympiacos Piraeus B.C. 2008–2009 season was the 2008–09 basketball season for Greek professional basketball club Olympiacos. The club competed in:
* 2008–09 Euroleague
* 2008–09 Greek Basket League
* Greek Basketball Cup
Olympiacos Piraeus B.C. 2008–2009 season was the 2008–09 basketball season for Greek professional basketball club Olympiacos. The club competed in:
* 2008–09 Euroleague
* 2008–09 Greek Basket League
* Greek Basketball Cup (en)