| 1989 US Open | |
|---|---|
| Date | August 28 – September 10 |
| Edition | 109th |
| Category | Grand Slam (ITF) |
| Surface | Hardcourt |
| Location | New York City, United States |
| Champions | |
| Men's singles | |
 Boris Becker | |
| Women's singles | |
| Steffi Graf | |
| Men's doubles | |
 John McEnroe /  Mark Woodforde | |
| Women's doubles | |
| Hana Mandlíková / Martina Navratilova | |
| Mixed doubles | |
| Robin White / Shelby Cannon | |
| Boys' singles | |
| Jonathan Stark | |
| Girls' singles | |
| Jennifer Capriati | |
| Boys' doubles | |
 Wayne Ferreira / Grant Stafford | |
| Girls' doubles | |
| Jennifer Capriati / Meredith McGrath | |
The 1989 US Open was a tennis tournament played on outdoor hard courts at the USTA National Tennis Center in New York City in the United States. It was the 109th edition of the US Open and was held from August 28 to September 10, 1989.