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| 2015 Japan Women's Open | |
|---|---|
| Date | September 14–20 |
| Edition | 7th |
| Category | WTA International |
| Draw | 32S / 16D |
| Prize money | US$250,000 |
| Surface | Hard |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Singles | |
 Yanina Wickmayer | |
| Doubles | |
 Chan Hao-ching / Chan Yung-jan | |
The 2015 Japan Women's Open was a women's tennis tournament played on outdoor hard courts. It was the seventh edition of the Japan Women's Open, and part of the WTA International tournaments of the 2015 WTA Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from September 14 through September 20, 2015. The tournament was moved from Osaka to Tokyo starting this year.