2023-10-23 Vienna

The 2023 Vienna Open (known as Erste Bank Open for sponsorship reasons) was a men's tennis tournament played on indoor hard courts in Vienna, Austria, that was part of the ATP 500 series of tournaments on the 2023 ATP Tour. It was the 49th edition of the Vienna Open and was held 23–29 October.

On 1 March 2022, the ATP, WTA, ITF and the four grand slam tournaments announced as a result of the Russian war in Ukraine, Belarus and Russia would not be allowed to play in tournaments under the names or flags of their countries. The tennis players are able to compete in tournaments but not under the Russian or Belarusian flags.

Singles

 * Seeds
 * Draw

Doubles

 * Seeds
 * Draw