2018 Swiss Open Gstaad – Singles
| Singles | |
|---|---|
| 2018 Swiss Open Gstaad | |
| Champion | Matteo Berrettini |
| Runner-up | Roberto Bautista Agut |
| Score | 7–6(11–9), 6–4 |
Fabio Fognini was the defending champion, but lost in the second round to Jürgen Zopp.
Matteo Berrettini won his first ATP World Tour title, defeating Roberto Bautista Agut in the final, 7–6(11–9), 6–4.