See main article: 2015 İstanbul Cup. Misaki Doi and Elina Svitolina were the defending champions, but Doi decided not to participate.
Svitolina partnered Daria Gavrilova and successfully defended the title, defeating Çağla Büyükakçay and Jelena Janković in the final, 5–7, 6–1, [10–4].