| Competition: | 2. Bundesliga |
| Season: | 2005–06 |
| Winners: | VfL Bochum |
| Promoted: | VfL Bochum Alemannia Aachen Energie Cottbus |
| Relegated: | Dynamo Dresden 1. FC Saarbrücken LR Ahlen Sportfreunde Siegen |
| League Topscorer: | Christian Eigler (18) |
| Matches: | 306 |
| Total Goals: | 801 |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 2. Bundesliga was the 32nd season of the 2. Bundesliga, the second tier of the German football league system. VfL Bochum, Alemannia Aachen, and Energie Cottbus were promoted to the Bundesliga while Dynamo Dresden, 1. FC Saarbrücken, LR Ahlen, and Sportfreunde Siegen were relegated to the Regionalliga.
For the 2005–06, season Eintracht Braunschweig, SC Paderborn 07, Kickers Offenbach and Sportfreunde Siegen were newly promoted to the 2. Bundesliga from the Regionalliga while VfL Bochum, F.C. Hansa Rostock and SC Freiburg had been relegated to the league from the Bundesliga.[1]
The league's top scorers:[2]
