2015 Western & Southern Open
| 2015 Western & Southern Open | |
|---|---|
| Date | August 15–23 |
| Edition | 114th (men) / 87th (women) |
| Category | ATP World Tour Masters 1000 (men) WTA Premier 5 (women) |
| Surface | Hard / outdoor |
| Location | Mason, Ohio, United States |
| Venue | Lindner Family Tennis Center |
| Champions | |
| Men's singles | |
| Roger Federer | |
| Women's singles | |
| Serena Williams | |
| Men's doubles | |
| Daniel Nestor / Édouard Roger-Vasselin | |
| Women's doubles | |
| Chan Hao-ching / Chan Yung-jan | |
The 2015 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts August 15–23, 2015. It was part of the ATP World Tour Masters 1000 of the 2015 ATP World Tour and of the WTA Premier 5 tournaments of the 2015 WTA Tour, as well as a 2015 US Open Series event. The 2015 tournament was the men's 114th edition and the women's 87th edition of the Cincinnati Masters. The tournament is held annually at the Lindner Family Tennis Center in Mason, Ohio (a northern suburb of Cincinnati), United States.
Roger Federer and Serena Williams were the defending champions and both successfully defended their titles.