| Ladies Open Lausanne | |
|---|---|
| Defunct tennis tournament | |
| Event name | WTA Swiss Open (1977–85) European Open (1986–94) Ladies Championship Gstaad (2016–2018) Ladies Open Lausanne (2019–2023) |
| Tour | WTA Tour |
| Founded | 1899 |
| Abolished | 2023 |
| Location | Lausanne Switzerland |
| Category | WTA 250 |
| Surface | Clay (red) - outdoors |
| Draw | 32S / 24Q / 16D |
| Prize money | US$259,303 (2023) |
| Website | ladiesopenlausanne.ch |
| Current champions (2023) | |
| Singles |  Elisabetta Cocciaretto |
| Doubles |  Anna Bondár  Diane Parry |
The Ladies Open Lausanne was originally founded in 1899 as the Swiss International Championships. It was a women's professional tennis tournament last held in Lausanne but has been held in a number of locations in Switzerland.