2008–09 Slovenian Basketball League
The 2008–09 Slovenian Basketball League was the 18th season of the Premier A Slovenian Basketball League, the highest professional basketball league in Slovenia. Union Olimpija won its 15th national championship.
Teams for the 2008–09 season
Regular season
| Pos | Team | P | W | L | F | A | Pts |
| 1 | Krka | 22 | 19 | 3 | 1841 | 1588 | 41 |
| 2 | Helios Domžale | 22 | 18 | 4 | 1822 | 1511 | 40 |
| 3 | Zlatorog Laško | 22 | 17 | 5 | 1761 | 1741 | 39 |
| 4 | Geoplin Slovan | 22 | 15 | 7 | 1791 | 1720 | 37 |
| 5 | Hopsi Polzela | 22 | 12 | 10 | 1787 | 1697 | 34 |
| 6 | Elektra Esotech | 22 | 9 | 13 | 1633 | 1749 | 31 |
| 7 | Luka Koper | 22 | 8 | 14 | 1747 | 1826 | 30 |
| 8 | Zagorje | 22 | 8 | 14 | 1650 | 1807 | 30 |
| 9 | TCG Mercator | 22 | 8 | 14 | 1561 | 1715 | 30 |
| 10 | Alpos Šentjur | 22 | 7 | 15 | 1641 | 1734 | 29 |
| 11 | Epic Misel Postojna | 22 | 7 | 15 | 1575 | 1825 | 29 |
| 12 | CPG Nova Gorica | 22 | 4 | 18 | 1543 | 1759 | 26 |
P=Matches played, W=Matches won, L=Matches lost, F=Points for, A=Points against, Pts=Points
Champions standings
P=Matches played, W=Matches won, L=Matches lost, F=Points for, A=Points against, Pts=PointsRelegation league
P=Matches played, W=Matches won, L=Matches lost, F=Points for, A=Points against, Pts=Points| Qualified for Relegation Playoffs | |
| Relegated to Second Division |
Playoffs
| Slovenian League 2008–09 Champions |
| Union Olimpija 15th title |
Relegation Playoffs
P=Matches played, W=Matches won, L=Matches lost, F=Points for, A=Points against, Pts=Points| Qualified for 2009–10 Slovenian First Division |