2018 Coupe Banque Nationale – Singles

Alison Van Uytvanck was the defending champion, but chose not to participate.

Pauline Parmentier won the title defeating Jessica Pegula in the final 7–5, 6–2.

Seeds
• # 🇧🇾 Aryna Sabalenka (first round)

• # Petra Martić (quarterfinals)

• # Monica Puig (quarterfinals)

• # 🇷🇴 Monica Niculescu (first round)

• # 🇺🇸 Sofia Kenin (semifinals)

• # 🇨🇿 Lucie Šafářová (first round)

• # 🇩🇪 Tatjana Maria (first round)

• # 🇫🇷 Pauline Parmentier (champion)

Seeds
• # Dalila Jakupović (qualifying competition)

• #🇨🇿 Marie Bouzková (qualified)

• #🇧🇬 Sesil Karatantcheva (qualified)

• #🇺🇸 Lauren Davis (qualifying competition)

• #🇺🇸 Asia Muhammad (withdrew, still competing in Chicago)

• #🇨🇿 Tereza Martincová (qualified)

• #🇺🇸 Victoria Duval (qualified)

• #🇺🇸 Jessica Pegula (qualified)

• #🇷🇸 Jovana Jakšić (first round)

• #🇺🇸 Maria Sanchez (withdrew, still competing in Chicago)

• #🇺🇸 Emina Bektas (first round)

• #🇺🇸 Maria Mateas (qualifying competition)

Qualifiers
• #🇺🇸 Victoria Duval

• #🇨🇿 Marie Bouzková

• #🇧🇬 Sesil Karatantcheva

• #🇺🇸 Jessica Pegula

• #🇨🇦 Gabriela Dabrowski

• #🇨🇿 Tereza Martincová