| 2015 US Open | |
|---|---|
| Date | August 31 – September 13 |
| Edition | 135th |
| Category | Grand Slam (ITF) |
| Draw | 128S/64D/32X |
| Prize money | $42,253,400 |
| Surface | Hard |
| Location | New York City, U.S. |
| Venue | USTA Billie Jean King National Tennis Center |
| Attendance | 691,280 |
| Champions | |
| Men's singles | |
 Novak Djokovic | |
| Women's singles | |
 Flavia Pennetta | |
| Men's doubles | |
 Pierre-Hugues Herbert / Nicolas Mahut | |
| Women's doubles | |
 Martina Hingis /  Sania Mirza | |
| Mixed doubles | |
| Martina Hingis / Leander Paes | |
| Wheelchair men's singles | |
 Shingo Kunieda | |
| Wheelchair women's singles | |
 Jordanne Whiley | |
| Wheelchair quad singles | |
 Dylan Alcott | |
| Wheelchair men's doubles | |
| Stéphane Houdet / Gordon Reid | |
| Wheelchair women's doubles | |
 Jiske Griffioen / Aniek van Koot | |
| Wheelchair quad doubles | |
 Nick Taylor / David Wagner | |
| Boys' singles | |
| Taylor Harry Fritz | |
| Girls' singles | |
 Dalma Gálfi | |
| Boys' doubles | |
 Félix Auger-Aliassime / Denis Shapovalov | |
| Girls' doubles | |
 Viktória Kužmová /  Aleksandra Pospelova | |
| Men's champions invitational | |
| Pat Cash / Mark Philippoussis | |
| Women's champions invitational | |
| Final Not Played | |
The 2015 US Open was a tennis tournament played on outdoor hard courts. It was the 135th edition of the US Open, the fourth and final Grand Slam event of the year. It took place at the USTA Billie Jean King National Tennis Center.
Marin Čilić was the defending champion in the men's singles event, but lost to eventual champion Novak Djokovic in the semifinals. Serena Williams was the three-time defending champion in the women's singles event and was also trying to complete the first calendar Grand Slam since Steffi Graf in 1988, having won the Australian Open, French Open and Wimbledon, but lost to Roberta Vinci in the semifinals. Flavia Pennetta won the women's singles title and became the first Italian to win the US Open. The finalists Vinci and Flavia Pennetta were childhood friends from Southern Italy and grew up together.[1]