2018 Open de Cagnes-sur-Mer

The 2018 Open de Cagnes-sur-Mer was a professional tennis tournament played on outdoor clay courts. It was the twenty-first edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Cagnes-sur-Mer, France, on 7–13 May 2018.

Seeds

 * 1 Rankings as of 30 April 2018.

Other entrants
The following players received a wildcard into the singles main draw:
 * 🇨🇦 Eugenie Bouchard
 * 🇫🇷 Fiona Ferro
 * 🇫🇷 Amandine Hesse
 * 🇩🇪 Andrea Petkovic

The following players received entry from the qualifying draw:
 * 🇷🇴 Alexandra Dulgheru
 * Bibiane Schoofs
 * Daniela Seguel
 * 🇺🇦 Dayana Yastremska

The following players received entry as lucky losers:
 * 🇦🇺 Jaimee Fourlis
 * 🇦🇺 Priscilla Hon

Singles

 * 🇸🇪 Rebecca Peterson def. 🇺🇦 Dayana Yastremska, 6–4, 7–5

Doubles

 * 🇺🇸 Kaitlyn Christian / 🇺🇸 Sabrina Santamaria def. 🇧🇾 Vera Lapko / 🇰🇿 Galina Voskoboeva, 2–6, 7–5, [10–7]