2018 L'Open 35 de Saint-Malo

The 2018 L'Open 35 de Saint-Malo was a professional tennis tournament played on outdoor clay courts. It was the twenty-third edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Saint-Malo, France, on 17–23 September 2018.

Seeds

 * 1 Rankings as of 10 September 2018.

Other entrants
The following players received a wildcard into the singles main draw:
 * Timea Bacsinszky
 * 🇫🇷 Clara Burel
 * 🇫🇷 Harmony Tan
 * 🇫🇷 Lucie Wargnier

The following players received entry from the qualifying draw:
 * 🇨🇴 María Fernanda Herazo
 * Diāna Marcinkēviča
 * 🇷🇺 Liudmila Samsonova
 * 🇫🇷 Marie Témin

The following players received entry as lucky losers:
 * 🇧🇪 Marie Benoît
 * 🇫🇷 Margot Yerolymos

Singles

 * 🇷🇺 Liudmila Samsonova def. 🇺🇦 Katarina Zavatska, 6–0, 6–2

Doubles

 * 🇪🇸 Cristina Bucșa / 🇨🇴 María Fernanda Herazo def. 🇷🇴 Alexandra Cadanțu / Diāna Marcinkēviča, 4–6, 6–1, [10–8]