The 2009 Warsaw Open was a women's tennis tournament played on outdoor clay courts. It was the 13th edition of the Warsaw Open, part of the Premier-level tournaments of the 2009 WTA Tour. It took place at the Legia Tennis Centre in Warsaw, Poland, from 18 May until 23 May 2009. Unseeded Alexandra Dulgheru, who entered the main draw as a qualifier, won the singles title.
Entrants
Seeds
Seedings are based on the rankings of May 11, 2009. Agnieszka Radwańska withdrew due to a back injury, so Tsvetana Pironkova became the No. 9 seed.
Other entrants
The following players received wildcards into the main draw:
Daniela Hantuchová
Maria Sharapova
Katarzyna Piter
The following players received entry from the qualifying draw:
Ioana Raluca Olaru
Ágnes Szatmári
Alexandra Dulgheru
Gréta Arn
The following players received entry as lucky losers:
Darya Kustova
Lenka Tvarošková
Finals
Singles
Alexandra Dulgheru defeated Alona Bondarenko, 7–6(3), 3–6, 6–0
It was Dulgheru's first career title.
Doubles
Raquel Kops-Jones / Bethanie Mattek-Sands defeated Yan Zi / Zheng Jie, 6–1, 6–1