| Singles | |
|---|---|
| 2017 German Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6–4, 4–6, 6–3 |
| Draw | 32 (4Q / 3WC) |
| Seeds | 8 |
Martin Kližan was the defending champion, but withdrew before the tournament began.
Leonardo Mayer won the title, defeating Florian Mayer in the final, 6–4, 4–6, 6–3.