The 2009 İstanbul Cup was a women's tennis tournament played on outdoor hard courts.

It took place in Istanbul, Turkey, from 27 July through 2 August 2009.

Vera Dushevina won the singles title.

The following players received wildcards into the singles main draw The following players received entry from the qualifying draw: Vera Dushevina defeated Lucie Hradecká, 6–0, 6–1 Lucie Hradecká / Renata Voráčová defeated.

Julia Görges / Patty Schnyder, 2–6, 6–3, 12–10