| Champ: |  Damir Džumhur |
| Runner: |  Fabio Fognini |
| Score: | 3–6, 6–4, 6–2 |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Type: | singles doubles |
See main article: article and 2017 St. Petersburg Open.
Alexander Zverev was the defending champion, but chose not to participate this year.
Damir Džumhur won his first ATP World Tour title, defeating Fabio Fognini in the final, 3–6, 6–4, 6–2. Džumhur became the first player from Bosnia and Herzegovina to win the ATP title.
The top four seeds receive a bye into the second round.
