2015 İstanbul Cup
The 2015 İstanbul Cup was a tennis tournament played on outdoor hard courts. It was the 8th edition of the İstanbul Cup, and part of the WTA International tournaments of the 2015 WTA Tour. It took place in Istanbul, Turkey, from 20 July through 27 July 2015. Unseeded Lesia Tsurenko won the singles title.
Finals
Singles
Lesia Tsurenko defeated Urszula Radwańska, 7–5, 6–1- It was Tsurenko's only singles title of the year and the 1st of her career.
Doubles
Daria Gavrilova / Elina Svitolina defeated Çağla Büyükakçay / Jelena Janković, 5–7, 6–1,Singles main-draw entrants
Seeds
Other entrants
The following players received wildcardThe following players received entry from the qualifying draw:
- Kateryna Bondarenko
- Margarita Gasparyan
- Jeļena Ostapenko
- Alexandra Panova
- Olga Savchuk
- Anna Tatishvili
Withdrawals
;Before the tournament- Belinda Bencic → replaced by Yaroslava Shvedova
- Alexandra Dulgheru → replaced by Yanina Wickmayer
- Kristina Mladenovic → replaced by Kirsten Flipkens
- Monica Niculescu → replaced by Elizaveta Kulichkova
- Flavia Pennetta → replaced by Vitalia Diatchenko
Retirements
Doubles main-draw entrants
Seeds
1 Rankings as of July 6, 2015.Other entrants
The following pairs received wildcardThe following pair received entry as alternates: