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