2011 Kōfu International Open

The 2011 Kōfu International Open was a professional tennis tournament played on hard courts. It was the fourth edition of the tournament which was part of the 2011 ITF Women's Circuit. It took place in Kōfu, Yamanashi, Japan between 3 and 9 October 2011.

Seeds

 * 1 Rankings are as of September 26, 2011.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇯🇵 Mai Minokoshi
 * 🇯🇵 Risa Ozaki
 * 🇯🇵 Riko Sawayanagi
 * 🇯🇵 Yuuki Tanaka

The following players received entry from the qualifying draw:
 * 🇯🇵 Mana Ayukawa
 * 🇯🇵 Yumi Miyazaki
 * 🇯🇵 Yuriko Sakai
 * 🇯🇵 Aki Yamasoto

Singles
Chang Kai-chen def. 🇱🇺 Mandy Minella, 6–4, 1–6, 6–4

Doubles
Chan Chin-wei / Hsu Wen-hsin def. 🇯🇵 Remi Tezuka / 🇯🇵 Akiko Yonemura, 6–3, 6–4