The 2015 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 41st edition of the event, and part of the ATP World Tour 500 Series of the 2015 ATP World Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 19 October until 25 October 2015. First-seeded David Ferrer won the singles title.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles[1] | 500 | 300 | 180 | 90 | 45 | 0 | 20 | 10 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 |
| width=130 bgcolor=ededed | Event | width=80 bgcolor=lime | W | width=85 bgcolor=thistle | F | width=85 bgcolor=ffff00 | SF | width=85 bgcolor=ffebcd | QF | width=85 bgcolor=afeeee | Round of 16 | width=85 bgcolor=afeeee | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| style=background:#f4f4f4 | Singles | €423,000 | €190,800 | €90,350 | €43,600 | €22,230 | €12,225 | €1,375 | €760 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style=background:#f4f4f4 | Doubles | €125,000 | €56,390 | €26,590 | €12,850 | €6,600 |
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| David Ferrer | 8 | 1 | |
| Kevin Anderson | 10 | 2 | |
| John Isner | 13 | 3 | |
| Jo-Wilfried Tsonga | 15 | 4 | |
| Dominic Thiem | 18 | 5 | |
| Gaël Monfils | 19 | 6 | |
| Ivo Karlović | 21 | 7 | |
| Fabio Fognini | 26 | 8 | |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Sam Groth →replaced by Jerzy Janowicz
Milos Raonic →replaced by Paolo Lorenzi| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Jean-Julien Rojer |  Romania | Horia Tecău | 9 | 1 | ||
 United Kingdom | Jamie Murray | Australia | John Peers | 15 | 2 | |
 Poland | Marcin Matkowski |  Serbia | Nenad Zimonjić | 20 | 3 | |
 India | Rohan Bopanna | Romania | Florin Mergea | 28 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
See main article: 2015 Erste Bank Open – Singles.
David Ferrer defeated 
Steve Johnson 4–6, 6–4, 7–5See main article: 2015 Erste Bank Open – Doubles.
Łukasz Kubot / 
Marcelo Melo defeated Jamie Murray / John Peers 4–6, 7–6(7–3), [10–6]
