The 2019 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 45th edition of the event, and part of the ATP Tour 500 Series of the 2019 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 21 October until 27 October 2019.[3]
The following players received wildcards into the singles main draw:
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:
.svg/1280px-Flag_of_Canada_(Pantone).svg.png){kind=small}
Félix Auger-Aliassime → replaced by 
Alexander Bublik
Juan Martín del Potro → replaced by 
Andrey Rublev
Lucas Pouille → replaced by Pierre-Hugues Herbert.svg/1280px-Flag_of_Australia_(converted).svg.png){kind=small}
Nick Kyrgios → replaced by 
Lorenzo Sonego Daniil Medvedev → replaced by 
Feliciano López
Kei Nishikori → replaced by 
Sam QuerreyThe following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
The following pair received entry as lucky losers:
Dominic Thiem defeated Diego Schwartzman, 3–6, 6–4, 6–3 Rajeev Ram / 
Joe Salisbury defeated 
Łukasz Kubot / 
Marcelo Melo, 6–4, 6–7(5–7), [10–5]
