| Champ: |  Maria Sharapova |
| Runner: |  Jelena Janković |
| Score: | 5–2, ret. |
| Type: | singles doubles |
| Draw: | 56 (8 / 3) |
| Seeds: | 16 |
| Before Name: | Toray Pan Pacific Open – Singles |
| After Name: | Toray Pan Pacific Open – Singles |
| Main Name: | Pan Pacific Open |
See main article: article and 2009 Toray Pan Pacific Open.
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.[1]
Dinara Safina was the defending champion, but lost to Chang Kai-chen in the second round.[2]
The top eight seeds received a bye into the second round.