2015 Engie Open Nantes Atlantique – Singles

Kateřina Siniaková was the defending champion, but lost to Mathilde Johansson in the semifinals.

Johansson won the title, defeating Andreea Mitu in the final, 6–3, 6–4.

Seeds
• # 🇩🇪 Anna-Lena Friedsam (quarterfinals)

• # 🇨🇿 Kateřina Siniaková (semifinals)

• # 🇷🇴 Andreea Mitu (final)

• # Anastasija Sevastova (second round)

• # 🇨🇿 Kristýna Plíšková (first round)

• # 🇺🇸 Louisa Chirico (semifinals)

• # 🇫🇷 Pauline Parmentier (second round)

• # 🇷🇺 Alexandra Panova (first round)