The 2015 Swiss Open Gstaad presented by Visilab was a men's tennis tournament played on outdoor clay courts.

It was the 48th edition of the Swiss Open, and part of the ATP World Tour 250 Series of the 2015 ATP World Tour.

It took place at the Roy Emerson Arena in Gstaad, Switzerland, from 27 July through 2 August 2015.

Third-seeded Dominic Thiem won the singles title.

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: