| 1998 US Open | |
|---|---|
| Date | August 31 – September 13 |
| Edition | 118th |
| Category | Grand Slam (ITF) |
| Surface | Hardcourt |
| Location | New York City, New York, United States |
| Champions | |
| Men's singles | |
 Patrick Rafter | |
| Women's singles | |
 Lindsay Davenport | |
| Men's doubles | |
Sandon Stolle /  Cyril Suk | |
| Women's doubles | |
 Martina Hingis / Jana Novotná | |
| Mixed doubles | |
Serena Williams /  Max Mirnyi | |
| Boys' singles | |
 David Nalbandian | |
| Girls' singles | |
| Jelena Dokić | |
| Boys' doubles | |
| K. J. Hippensteel / David Martin | |
| Girls' doubles | |
 Kim Clijsters /  Eva Dyrberg | |
The 1998 US Open was a tennis tournament played on outdoor hardcourts at the USTA National Tennis Center in New York City in New York in the United States. It was the 118th edition of the US Open and was held from August 31 through September 13, 1998.