Agnieszka Radwańska defeated Vera Zvonareva in the final, 6–3, 6–2 to win the singles tennis title at the 2011 Pan Pacific Open.

Caroline Wozniacki was the defending champion, but lost to Kaia Kanepi in the third round.

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

Qualifying

Main draw

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

External links WTA main draw WTA qualifying draw