&sq=Qlik&lang=&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (September 2019) |
| 2019 US Open | |
|---|---|
| Date | August 26 – September 8 |
| Edition | 139th |
| Category | Grand Slam (ITF) |
| Draw | 128S/64D/32X |
| Prize money | $57,238,700[1] |
| Surface | Hard |
| Location | New York City, New York, United States |
| Venue | USTA Billie Jean King National Tennis Center |
| Champions | |
| Men's singles | |
 Rafael Nadal | |
| Women's singles | |
 Bianca Andreescu | |
| Men's doubles | |
 Juan Sebastián Cabal / Robert Farah | |
| Women's doubles | |
 Elise Mertens /  Aryna Sabalenka | |
| Mixed doubles | |
 Bethanie Mattek-Sands /  Jamie Murray | |
| Wheelchair men's singles | |
| Alfie Hewett | |
| Wheelchair women's singles | |
 Diede de Groot | |
| Wheelchair quad singles | |
| Andrew Lapthorne | |
| Wheelchair men's doubles | |
| Alfie Hewett / Gordon Reid | |
| Wheelchair women's doubles | |
| Diede de Groot / Aniek van Koot | |
| Wheelchair quad doubles | |
 Dylan Alcott / Andrew Lapthorne | |
| Boys' singles | |
 Jonáš Forejtek | |
| Girls' singles | |
| Camila Osorio | |
| Boys' doubles | |
| Eliot Spizzirri / Tyler Zink | |
| Girls' doubles | |
 Kamilla Bartone /  Oksana Selekhmeteva | |
The 2019 US Open was the 139th edition of tennis' US Open and the fourth and final Grand Slam event of the year. It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in New York City.
Novak Djokovic and Naomi Osaka were the men's and women's singles defending champions. Neither managed to defend their title, with Djokovic retiring in the fourth round due to a shoulder injury after losing the first two sets against Stan Wawrinka, and Osaka losing in the fourth round against Belinda Bencic.
Serena Williams set an Open Era record by reaching 10 US Open finals.
It was the first time since the 2017 Australian Open and fourth time in the Open Era that both the men's and women's number one seeds were defeated before the quarterfinals.
In a repeat of the 2019 Rogers Cup, Rafael Nadal won the men's singles title, defeating first time Grand Slam finalist Daniil Medvedev in a 5-set thriller for his 19th Grand Slam singles title. Bianca Andreescu won the women's singles title, defeating Serena Williams in straight sets in the final, becoming the first Canadian to win a Grand Slam singles title.