2023 Swiss Open Gstaad

The 2023 Swiss Open Gstaad was a men's tennis tournament played on outdoor clay courts. It was the 55th edition of the Swiss Open, and part of the ATP Tour 250 Series of the 2023 ATP Tour. It took place at the Roy Emerson Arena in Gstaad, Switzerland, from 17 through 23 July 2023.

Champions

Pedro Cachin def. Albert Ramos Viñolas, 3–6, 6–0, 7–5

Dominic Stricker / Stan Wawrinka def. Marcelo Demoliner / Matwé Middelkoop, 7–6, 6–2

_{*per team}

^† Rankings are as of 3 July 2023

The following players received wildcards into the main draw:

The following players received entry from the qualifying draw:

The following player received entry as a lucky loser:

^† Rankings are as of 3 July 2023

The following pairs received wildcards into the doubles main draw:

The following pair received entry as alternates: