The 2009 İstanbul Cup was a women's tennis tournament played on outdoor hard courts. It was the fifth edition of the İstanbul Cup, and was part of the WTA International tournaments of the 2009 WTA Tour. It took place in Istanbul, Turkey, from 27 July through 2 August 2009. Vera Dushevina won the singles title.
| Country | Player | Rank | Seed | |
|---|---|---|---|---|
 Russian Federation | 7 | 1 | ||
| 19 | 2 | |||
 Spain | 20 | 3 | ||
 France | 39 | 4 | ||
| Russian Federation | 49 | 5 | ||
 Kazakhstan | 57 | 6 | ||
 Belarus | 65 | 7 | ||
 Czech Republic | 69 | 8 |
The following players received wildcards into the singles main draw
The following players received entry from the qualifying draw:
See main article: 2009 İstanbul Cup – Singles. Vera Dushevina defeated Lucie Hradecká, 6–0, 6–1
See main article: 2009 İstanbul Cup – Doubles. Lucie Hradecká / Renata Voráčová defeated. Julia Görges / Patty Schnyder, 2–6, 6–3, 12–10
