| Champ: |  Damir Džumhur |
| Runner: |  Ričardas Berankis |
| Score: | 6–2, 1–6, 6–4 |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Before Name: | Kremlin Cup – Men's singles |
| After Name: | Kremlin Cup – Men's singles |
See main article: article and 2017 Kremlin Cup.
Pablo Carreño Busta was the defending champion, but lost to Daniil Medvedev in the second round.
Damir Džumhur won the title, defeating Ričardas Berankis in the final, 6–2, 1–6, 6–4.
The top four seeds received a bye into the second round.