2005–06 Lega Basket Serie A
The 2005–06 Lega Basket Serie A season, known as the Serie A TIM for sponsorship reasons, was the 84th season of the Lega Basket Serie A, the highest professional basketball league in Italy.
The regular season ran from October 9, 2005 to May 2006, 18 teams played 34 games each. The top 8 teams made the play-offs whilst the lowest ranked team, Viola Reggio Calabria and the bankrupt club BT Roseto, were relegated to the Legadue.
Benetton Treviso won their second title by winning the playoff finals series against Climamio Bologna.
Regular Season 2005/06
| Rank | Team | GP | W | L | PF | PA | Coach |
| 1 | Climamio Bologna | 34 | 27 | 7 | 2,929 | 2,650 |  Jasmin Repeša |
| 2 | Benetton Treviso | 34 | 26 | 8 | 2,862 | 2,616 |  David Blatt |
| 3 | Montepaschi Siena | 34 | 23 | 11 | 2,763 | 2,495 |  Carlo Recalcati |
| 4 | Carpisa Napoli | 34 | 23 | 11 | 3,051 | 2,848 | Piero Bucchi |
| 5 | Snaidero Udine | 34 | 22 | 12 | 2,819 | 2,793 | Cesare Pancotto |
| 6 | Lottomatica Roma | 34 | 22 | 12 | 2,740 | 2,667 |  Svetislav Pešić |
| 7 | Armani Jeans Milano | 34 | 22 | 12 | 2,826 | 2,662 | Lino Lardo Mario Fioretti Aleksandar Đorđević |
| 8 | Angelico Biella | 34 | 19 | 15 | 2,730 | 2,645 | Alessandro Ramagli |
| 9 | VidiVici Bologna | 34 | 19 | 15 | 2,730 | 2,645 |  Zare Markovski |
| 10 | Whirlpool Varese | 34 | 17 | 17 | 2,620 | 2,643 |  Ruben Magnano |
| 11 | Bipop Carire Reggio Emilia | 34 | 16 | 18 | 2,796 | 2,803 | Fabrizio Frates |
| 12 | Basket Livorno | 34 | 13 | 21 | 2,764 | 2,768 | Paolo Moretti |
| 13 | Navigo.it Teramo | 34 | 12 | 22 | 2,786 | 2,944 | Matteo Boniciolli |
| 14 | Vertical Vision Cantù | 34 | 12 | 22 | 2,699 | 2,799 | Stefano Sacripanti |
| 15 | BT Roseto | 34 | 10 | 24 | 2,464 | 2,693 | Alberto Martelossi Attilio Caja |
| 16 | Upea Capo d'Orlando | 34 | 10 | 24 | 2,779 | 2,913 | Giovanni Perdichizzi |
| 17 | Air Avellino | 34 | 10 | 24 | 2,589 | 2,828 | Alessandro Giuliani Andrea Capobianco |
| 18 | Viola Reggio Calabria | 34 | 3 | 31 | 2,549 | 3,055 | Walter De Raffaele Pasquale Iracà Antonio Zorzi Pasquale Iracà |
Teams marked in green qualified for the playoffs. Teams marked in red were relegated to Serie A2. BT Roseto team went bankrupt after the season, therefore Air Avellino was spared relegation.
Playoffs
Quarterfinals- Climamio Bologna - Angelico Biella 3-1
- Benetton Treviso - Armani Jeans Milano 3-2
- Lottomatica Roma - Montepaschi Siena 3-1
- Carpisa Napoli - Snaidero Udine 3-0
- Climamio Bologna - Carpisa Napoli 3-2
- Benetton Treviso - Lottomatica Roma 3-1
- Benetton Treviso - Climamio Bologna 3-1
Individual leaders
Scoring
| Rank | Name | Nation | Team | PPG |
| 1. | Lynn Greer | | Carpisa Napoli | 23.5 |
| 2. | David Bluthenthal | | VidiVici Bologna | 20.2 |
| 3. | Joe Crispin | | Navigo.it Teramo | 19.1 |
| 4. | Damon Williams | | Angelico Biella | 18.9 |
| 5. | Delonte Holland | | Navigo.it Teramo | 18.6 |
| 6. | Rimantas Kaukenas |  | Montepaschi Siena | 18.3 |
| 7. | Keith Carter | | Upea Capo d'Orlando | 18.2 |
| 8. | David Young | | Air Avellino | 18.1 |
| 9. | David Hawkins | | Lottomatica Roma | 17.3 |
| 10. | Terrell McIntyre | | Bipop Carire Reggio Emilia | 16.9 |