2018 Engie Open de Biarritz – Singles

Mihaela Buzărnescu was the defending champion but chose not to participate.

Tamara Korpatsch won the title, defeating Timea Bacsinszky in the final, 6–2, 7–5.

Seeds
• # 🇩🇪 Carina Witthöft (second round)

• # 🇺🇿 Sabina Sharipova (first round, retired)

• # 🇧🇪 Ysaline Bonaventure (quarterfinals)

• # 🇺🇦 Anhelina Kalinina (quarterfinals)

• # 🇷🇴 Irina Bara (second round)

• # 🇩🇪 Laura Siegemund (first round)

• # Conny Perrin (second round)

• # 🇷🇺 Irina Khromacheva (first round)