2021 Elle Spirit Open

The 2021 Elle Spirit Open was a professional women's tennis tournament played on outdoor clay courts. It was the fourth edition of the tournament which was part of the 2021 ITF Women's World Tennis Tour. It took place in Montreux, Switzerland between 6 and 12 September 2021.

Seeds

 * 1 Rankings are as of 30 August 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * Jenny Dürst
 * Alina Granwehr
 * Valentina Ryser
 * Joanne Züger

The following player received entry using as a special exempt:
 * 🇹🇷 İpek Öz

The following players received entry from the qualifying draw:
 * 🇷🇴 Karola Bejenaru
 * 🇮🇹 Melania Delai
 * Fiona Ganz
 * 🇬🇧 Sarah Beth Grey
 * 🇳🇴 Malene Helgø
 * 🇮🇹 Verena Meliss
 * 🇮🇹 Tatiana Pieri
 * 🇺🇸 Chiara Scholl

Singles

 * 🇧🇷 Beatriz Haddad Maia def. 🇬🇧 Francesca Jones, 6–4, 6–3

Doubles

 * 🇫🇷 Estelle Cascino / 🇮🇹 Camilla Rosatello def. Conny Perrin / 🇬🇧 Eden Silva, 7–6(7–4), 6–4