| Champ: |  Gilles Simon |
| Runner: | Matthias Bachinger |
| Score: | 7–6(7–2), 6–1 |
| Draw: | 28 (4 / 3) |
| Seeds: | 8 |
| Type: | singles doubles |
See main article: article and 2018 Moselle Open.
Peter Gojowczyk was the defending champion, but lost to Kei Nishikori in the second round.
Gilles Simon won the title, defeating Matthias Bachinger in the final, 7–6(7–2), 6–1.
The top four seeds receive a bye into the second round.