| 2023 AON Open Challenger | |
|---|---|
| Date | 4–10 September |
| Edition | 19th |
| Surface | Clay |
| Location | Genoa, Italy |
| Champions | |
| Singles | |
 Thiago Seyboth Wild | |
| Doubles | |
 Giovanni Oradini / Lorenzo Rottoli | |
The 2023 AON Open Challenger was a professional tennis tournament played on clay courts. It was the 19th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Genoa, Italy between 4 and 10 September 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| Alexander Shevchenko | 83 | 1 | |
 ARG | Federico Coria | 91 | 2 |
| BRA | Thiago Seyboth Wild | 106 | 3 |
 HUN | Zsombor Piros | 112 | 4 |
| BRA | Thiago Monteiro | 118 | 5 |
 FRA | Benoît Paire | 125 | 6 |
| ITA | Fabio Fognini | 146 | 7 |
| ITA | Andrea Vavassori | 163 | 8 |
The following players received wildcards into the singles main draw:
Enrico Dalla Valle Giovanni Fonio Marcello SerafiniThe following players received entry from the qualifying draw:
Hady Habib Federico Iannaccone Giovanni Oradini Andrea Picchione Lorenzo Rottoli 
Tseng Chun-hsin The following player received entry as a lucky loser:
Thiago Seyboth Wild def. Fabio Fognini 6–2, 7–6(7–3). Giovanni Oradini / Lorenzo Rottoli def. 
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