The 2020 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 46th edition of the event, and part of the ATP Tour 500 Series of the 2020 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 26 October until 1November 2020.
One seed Andrey Rublev won the singles title.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Novak Djokovic | 1 | 1 | ||
| Dominic Thiem | 3 | 2 | ||
| Stefanos Tsitsipas | 5 | 3 | ||
| Daniil Medvedev | 6 | 4 | ||
| Andrey Rublev | 8 | 5 | ||
 Argentina | ||||
 France | Gaël Monfils | 11 | 7 | |
 Canada | Denis Shapovalov | 12 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry using a special exempt:
The following players received entry using a protected ranking into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Matteo Berrettini → replaced by 
Taylor Fritz Fabio Fognini → replaced by 
Filip Krajinović
David Goffin → replaced by Jan-Lennard Struff John Isner → replaced by Jason Jung
Kei Nishikori → replaced by 
Vitaliy Sachko Milos Raonic → replaced by 
Hubert Hurkacz Diego Schwartzman → replaced by Lorenzo Sonego| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Mate Pavić |  Brazil | Bruno Soares | 11 | 1 | ||
| Rajeev Ram |  United Kingdom | Joe Salisbury | 16 | 2 | ||
| Poland | Łukasz Kubot | Brazil | Marcelo Melo | 24 | 3 | |
| France | Pierre-Hugues Herbert | France | Nicolas Mahut | 25 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
See main article: 2020 Erste Bank Open – Singles.
Andrey Rublev def. Lorenzo Sonego, 6–4, 6–4See main article: 2020 Erste Bank Open – Doubles.
Łukasz Kubot / Marcelo Melo def. Jamie Murray / Neal Skupski, 7–6(7–5), 7–5
