| 2011 AON Open Challenger | |
|---|---|
| Date | 5–11 September |
| Edition | 9th |
| Location | Genoa, Italy |
| Champions | |
| Singles | |
 Martin Kližan | |
| Doubles | |
 Dustin Brown /  Horacio Zeballos | |
The 2011 AON Open Challenger was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Genoa, Italy between 5 and 11 September 2011.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ESP | Pablo Andújar | 45 | 1 |
| ARG | Carlos Berlocq | 74 | 2 |
 POR | Rui Machado | 79 | 3 |
 ITA | Filippo Volandri | 85 | 4 |
 KAZ | Andrey Golubev | 98 | 5 |
| SVK | Martin Kližan | 103 | 6 |
| ARG | Diego Junqueira | 104 | 7 |
| POR | Frederico Gil | 106 | 8 |
The following players received wildcards into the singles main draw:
Pablo Andújar Andea Basso Edoardo Eremin Francesco PiccoThe following players received entry from the qualifying draw:
Benjamin Balleret Guillermo Durán Thomas Fabbiano 
Michael LinzerThe following players received entry as a lucky loser into the singles main draw:
Enrico Burzi Renzo Olivo Martin Kližan def. Leonardo Mayer, 6–3, 6–1
Dustin Brown / Horacio Zeballos def. 
Jordan Kerr / 
Travis Parrott, 6–2, 7–5
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