2011 Gerry Weber Open – Singles
| Singles | |
|---|---|
| 2011 Gerry Weber Open | |
| Champion | Philipp Kohlschreiber |
| Runner-up | Philipp Petzschner |
| Score | 7–6(7–5), 2–0 ret. |
| Draw | 32 |
| Seeds | 8 |
Lleyton Hewitt was the defending champion, but lost to Philipp Kohlschreiber in the quarterfinals.
Kohlschreiber won the tournament, defeating Philipp Petzschner in an all-German final, the first in the tournament's history, after Petzschner retired in the second set at a score of 7–6, 2–0.