The 2023 Generali Open Kitzbühel was a tennis tournament played on outdoor clay courts.

It was the 79th edition of the Austrian Open Kitzbühel, and part of the World Tour 250 series of the 2023 ATP Tour.

It took place at the Tennis stadium Kitzbühel in Kitzbühel, Austria, from 31 July through 5 August 2023.

[1] *per team The following players received wildcards into the main draw: The following player received entry with a protected ranking: The following player received entry as a special exempt: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: