The 2012 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 38th edition of the event known that year as the Erste Bank Open, and part of the ATP World Tour 250 Series of the 2012 ATP World Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 13 October through 21 October 2012. First-seeded Juan Martín del Potro won the singles title.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Juan Martín del Potro[2] | 8 | 1 | ||
| Janko Tipsarević | 9 | 2 | ||
| Tommy Haas | 21 | 3 | ||
| Jürgen Melzer | 35 | 4 | ||
| Fabio Fognini | 45 | 5 | ||
| Robin Haase | 51 | 6 | ||
| Benoît Paire | 52 | 7 | ||
| Xavier Malisse | 57 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Guillermo García López (groin injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Austria | Jürgen Melzer | Austria | Alexander Peya | 53 | 1 | |
| Julian Knowle | Filip Polášek | 68 | 2 | |||
| Treat Conrad Huey | Dominic Inglot | 88 | 3 | |||
| Dustin Brown | Christopher Kas | 90 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2012 Erste Bank Open – Singles.
Juan Martín del Potro defeated Grega Žemlja, 7–5, 6–3See main article: 2012 Erste Bank Open – Doubles.
Julian Knowle / 
Filip Polášek, 6–4, 3–6, [10–4]
