Alexander Bublik defeated Juan Manuel Cerúndolo in the final, 6–4, 4–6, 6–3 to win the singles tennis title at the 2025 Swiss Open Gstaad. It was his sixth ATP Tour title, and his first on clay. Cerúndolo was contesting his first ATP Tour final since 2021.
Matteo Berrettini was the reigning champion, but withdrew before the tournament began.
Seeds The top four seeds received a bye into the second round.
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers
Lucky loser
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Main draw Qualifying draw