Sebastián Báez defeated Dominic Thiem in the final, 6–3, 6–1 to win the singles tennis title at the 2023 Austrian Open Kitzbühel. It was his third ATP Tour singles title. This was Thiem's first appearance in an ATP Tour final since the 2020 ATP Finals, and his last before retiring from professional tennis the following year. Thiem was also the second consecutive Austrian wildcard to reach the final, after Filip Misolic the previous year.

Roberto Bautista Agut was the reigning champion, but withdrew before the tournament began.

Seeds The top four seeds received a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying Seeds

Qualifiers

Lucky loser Juan Manuel Cerúndolo

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links Main draw Qualifying draw