The 2015 St. Petersburg Open was a tennis tournament played on indoor hard courts. It was the 20th edition of the St. Petersburg Open, and part of the ATP World Tour 250 Series of the 2015 ATP World Tour. It took place at the Sibur Arena in Saint Petersburg, Russia, from September 21 through 27, 2015.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Tomáš Berdych | 5 | 1 | ||
| Milos Raonic | 9 | 2 | ||
| Dominic Thiem | 20 | 3 | ||
| Roberto Bautista Agut | 22 | 4 | ||
| Tommy Robredo | 27 | 5 | ||
| Benoît Paire | 32 | 6 | ||
| João Sousa | 48 | 7 | ||
| Mikhail Kukushkin | 49 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Pablo Andújar →replaced by Ernests Gulbis| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Treat Huey | Henri Kontinen | 76 | 1 | |||
 Austria | Julian Knowle | Alexander Peya | 76 | 2 | ||
 Poland | Mariusz Fyrstenberg | Santiago González | 108 | 3 | ||
| Austria | Philipp Oswald | Adil Shamasdin | 118 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2015 St. Petersburg Open – Singles.
Milos Raonic defeated João Sousa, 6–3, 3–6, 6–3See main article: 2015 St. Petersburg Open – Doubles.
Henri Kontinen defeated Julian Knowle / Alexander Peya, 7–5, 6–3
