2023 Upper Austria Open
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| 2023 Upper Austria Open | |
|---|---|
| Date | 8–14 May |
| Edition | 2nd |
| Surface | Clay |
| Location | Mauthausen, Austria |
| Champions | |
| Singles | |
 Hamad Međedović | |
| Doubles | |
 Romain Arneodo /  Sam Weissborn | |
The 2023 Danube Upper Austria Open was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Mauthausen, Austria between 8 and 14 May 2023.
