The 2023 Ladies Open Lausanne was a professional women's tennis tournament played on outdoor clay courts.

It was the 30th edition of the Swiss Open, and part of the 250 category of the 2023 WTA Tour.

It took place at Tennis Club Stade-Lausanne in Lausanne, Switzerland, from 24 through 30 July 2023.

Second-seeded Elisabetta Cocciaretto won the singles title.

[2] The following players received wildcard entry into the singles main draw: The following players received entry using a protected ranking: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: † Rankings are as of 17 July 2023