2021 Ladies Open Lausanne
The 2021 Ladies Open Lausanne was a women's tennis tournament played on outdoor clay courts. It was the 28th edition of the Ladies Open Lausanne, and part of the 250 category of the 2021 WTA Tour. It took place at Tennis Club Stade-Lausanne in Lausanne, Switzerland, from 12 through 18 July 2021.
Finals
Singles
- Tamara Zidanšek defeated Clara Burel, 4–6, 7–6, 6–1
Doubles
- Susan Bandecchi / Simona Waltert defeated Ulrikke Eikeri / Valentini Grammatikopoulou, 6–3, 6–7,
Singles main draw entrants
Seeds
1 Rankings are as of 28 June 2021.Other entrants
The following players received wildcards into the main draw:The following player received entry using a protected ranking:
The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Sorana Cîrstea → replaced by Maryna Zanevska
- Alizé Cornet → replaced by Francesca Di Lorenzo
- Katarzyna Kawa → replaced by Alexandra Dulgheru
- Liudmila Samsonova → replaced by Clara Burel
- Sloane Stephens → replaced by Mandy Minella
- Martina Trevisan → replaced by Marina Melnikova
Doubles main draw entrants
Seeds
Other entrants
The following pairs received wildcards into the doubles main draw:The following pair received entry as alternates:
Withdrawals
;Before the tournament- Akgul Amanmuradova / Valentina Ivakhnenko → replaced by Valentina Ivakhnenko / Jesika Malečková
- Anna Blinkova / Anna-Lena Friedsam → replaced by Elena Bogdan / Alexandra Dulgheru
- Vivian Heisen / Oksana Kalashnikova → replaced by Mandy Minella / Stefanie Vögele