2018 Open de Cagnes-sur-Mer – Singles

Beatriz Haddad Maia was the defending champion, but chose to compete at the 2018 Mutua Madrid Open instead.

Rebecca Peterson won the title, defeating Dayana Yastremska in the final, 6–4, 7–5.

Seeds
• # 🇩🇪 Carina Witthöft (first round)

• # 🇫🇷 Pauline Parmentier (first round)

• # 🇫🇷 Océane Dodin (second round)

• # 🇩🇪 Andrea Petkovic (semifinals)

• # 🇸🇰 Viktória Kužmová (quarterfinals)

• # Arantxa Rus (first round)

• # Jana Fett (first round)

• # 🇸🇪 Rebecca Peterson (champion)