2005–06 ACB season
The 2005–06 ACB season was the 23rd season of the Liga ACB.
Promotion and relegation
Teams promoted from LEB'''Teams relegated to LEB Oro'''
Team information
Stadia and locations
Team standings
| Team | Played | W | L | Points for | Points against | |
| 1P | Unicaja | 34 | 26 | 8 | 2,753 | 2,512 |
| 2P | TAU Cerámica | 34 | 25 | 9 | 2,855 | 2,607 |
| 3P | Winterthur FC Barcelona | 34 | 24 | 10 | 2,747 | 2,551 |
| 4P | DKV Joventut | 34 | 23 | 11 | 2,834 | 2,645 |
| 5P | Gran Canaria | 34 | 20 | 14 | 2,568 | 2,493 |
| 6P | Real Madrid Baloncesto | 34 | 19 | 15 | 2,640 | 2,485 |
| 7P | Akasvayu Girona | 34 | 18 | 16 | 2,739 | 2,701 |
| 8P | Adecco Estudiantes | 34 | 17 | 17 | 2,770 | 2,832 |
| 9 | Pamesa Valencia | 34 | 16 | 18 | 2,638 | 2,693 |
| 10 | Alta Gestión Fuenlabrada | 34 | 15 | 19 | 2,621 | 2,706 |
| 11 | Caja San Fernando | 34 | 14 | 20 | 2,662 | 2,764 |
| 12 | Etosa Alicante | 34 | 14 | 20 | 2,574 | 2,639 |
| 13 | CB Granada | 34 | 14 | 20 | 2,620 | 2,755 |
| 14 | Forum Valladolid | 34 | 13 | 21 | 2,706 | 2,767 |
| 15 | Lagun Aro Bilbao | 34 | 13 | 21 | 2,534 | 2,672 |
| 16 | Llanera Menorca | 34 | 12 | 22 | 2,600 | 2,772 |
| 17R | Ricoh Manresa | 34 | 12 | 22 | 2,599 | 2,722 |
| 18R | Leche Rio Breogan | 34 | 11 | 23 | 2,580 | 2,724 |
| Play-offs | Direct relegation |