Hard / Outdoor
| Tier I|
| September 26 – October 2|
The 2011 Toray Pan Pacific Open was a tennis tournament played on outdoor hard courts. It was the 28th edition of the Toray Pan Pacific Open, and was part of the Premier Series of the 2011 WTA Tour. It took place at the Ariake Coliseum in Tokyo, Japan, from September 26 through October 2, 2011.
2011 Toray Pan Pacific Open Wikipedia
Agnieszka Radwańska defeated Vera Zvonareva, 6–3, 6–2.It was Radwańska's second title of the year and sixth overall.
Liezel Huber / Lisa Raymond defeated Gisela Dulko / Flavia Pennetta, 7–6(7–4), 0–6, [10–6].Rankings are as of September 19, 2011.
The following players received wildcards into the singles main draw: Misaki Doi
The following players received entry from the qualifying draw: Jill Craybas