2009 Toray Pan Pacific Open – Singles

Maria Sharapova won the singles tennis title at the 2009 Pan Pacific Open after Jelena Janković retired from the final with a wrist injury, with the scoreline at 5–2.

Dinara Safina was the defending champion, but lost to Chang Kai-chen in the second round.

Seeds
The top eight seeds received a bye into the second round.

• # 🇷🇺 Dinara Safina (second round)

• # 🇺🇸 Venus Williams (second round)

• # 🇷🇺 Elena Dementieva (second round)

• # Caroline Wozniacki (second round, retired due to viral illness)

• # 🇷🇺 Svetlana Kuznetsova (second round)

• # 🇷🇺 Vera Zvonareva (second round)

• # Jelena Janković (final, retired due to wrist injury)

• # 🇧🇾 Victoria Azarenka (quarterfinals)

• # 🇮🇹 Flavia Pennetta (first round)

• # 🇷🇸 Ana Ivanovic (first round)

• # 🇵🇱 Agnieszka Radwańska (semifinals)

• # 🇦🇺 Samantha Stosur (second round)

• # 🇷🇺 Nadia Petrova (second round)

• # 🇫🇷 Marion Bartoli (quarterfinals)

• # 🇨🇳 Li Na (semifinals)

• # 🇫🇷 Virginie Razzano (first round)