2011 Erste Bank Open – Singles
| Singles | |
|---|---|
| 2011 Erste Bank Open | |
| Champion | Jo-Wilfried Tsonga |
| Runner-up | Juan Martín del Potro |
| Score | 6–7(5–7), 6–3, 6–4 |
| Draw | 28 |
| Seeds | 8 |
Jo-Wilfried Tsonga defeated Juan Martín del Potro in the final, 6–7(5–7), 6–3, 6–4 to win the singles tennis title at the 2011 Vienna Open.
Jürgen Melzer was the two-time defending champion, but lost to Kevin Anderson in the quarterfinals.
This tournament marked the final professional appearance of former world No. 1 and 1995 French Open champion Thomas Muster; he lost in the first round to Dominic Thiem.