2015 Citi Open – Women's singles

Svetlana Kuznetsova was the defending champion, but withdrew from her second round match due to a lower left leg injury.

Sloane Stephens won her first WTA title, defeating Anastasia Pavlyuchenkova in the final, 6–1, 6–2.

Seeds
• #🇷🇺 Ekaterina Makarova (semifinals, retired)

• #🇦🇺 Samantha Stosur (semifinals)

• # Belinda Bencic (second round)

• #🇷🇺 Svetlana Kuznetsova (second round, withdrew)

• #🇫🇷 Alizé Cornet (second round)

• #🇷🇴 Irina-Camelia Begu (quarterfinals)

• #🇺🇸 Coco Vandeweghe (first round)

• #🇰🇿 Zarina Diyas (first round, retired)

Seeds
• # 🇧🇪 An-Sophie Mestach (qualified)

• # 🇷🇺 Elizaveta Kulichkova (qualifying competition)

• # 🇧🇾 Aliaksandra Sasnovich (qualifying competition)

• # 🇺🇦 Anhelina Kalinina (qualifying competition)

• # 🇯🇵 Eri Hozumi (first round)

• # 🇮🇱 Julia Glushko (qualified)

• # 🇦🇺 Anastasia Rodionova (withdrew)

• # 🇫🇷 Stéphanie Foretz (first round)

Qualifiers
• # 🇧🇪 An-Sophie Mestach

• # 🇺🇸 Sanaz Marand

• # 🇬🇧 Naomi Broady

• # 🇮🇱 Julia Glushko