| Club: | Alemannia Aachen |
| Season: | 2011–12 |
| Manager: | Ralf Aussem |
| Mgrtitle: | Head Coach |
| Chairman: | Alfred Nachtsheim |
| Chrtitle: | President |
| League: | 2. Bundesliga |
| League Result: | 17th (relegated) |
| Cup1: | DFB-Pokal |
| Cup1 Result: | 1st Round (eliminated) |
| League Topscorer: | Benjamin Auer (6) |
| Nextseason: | 2012–13 |
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The 2011–12 season of Alemannia Aachen began on 16 July 2011 with the first game in the 2. Bundesliga.
In:Out:
In:
Out:
|-|colspan="14"|Players sold or loaned out after the start of the season:|}Last updated: 6 May 2012
See main article: 2011–12 2. Bundesliga.