2025 Erste Bank Open
The 2025 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 51st edition of the event, and part of the ATP 500 tournaments of the 2025 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 20 until 26 October 2025.
Champions
Singles
- Jannik Sinner def. Alexander Zverev, 3–6, 6–3, 7–5
Doubles
- Julian Cash / Lloyd Glasspool def. Francisco Cabral / Lucas Miedler, 6–1, 7–6
Singles main-draw entrants
Seeds
- 1 Rankings as of 13 October 2025
Other entrants
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
- Hamad Medjedovic
Withdrawals
- Grigor Dimitrov → replaced by Nuno Borges
- Tommy Paul → replaced by Daniel Altmaier
- Frances Tiafoe → replaced by Camilo Ugo Carabelli
- Stefanos Tsitsipas → replaced by Hamad Medjedovic
Doubles main draw entrants
Seeds
- 1 Rankings as of 13 October 2025
Other entrants
The following pair received entry from the qualifying draw:
The following pairs received entry as lucky losers:
- Ariel Behar / Joran Vliegen
- Fernando Romboli / John-Patrick Smith
Withdrawals
- Flavio Cobolli / Corentin Moutet → replaced by Ariel Behar / Joran Vliegen
- Alex Michelsen / John Peers → replaced by Fernando Romboli / John-Patrick Smith