| 1963 U.S. National Championships | |
|---|---|
| Date | 28 August – 8 September |
| Edition | 83rd |
| Category | Grand Slam (ITF) |
| Surface | Grass |
| Location | Forest Hills, Queens New York City, United States |
| Venue | West Side Tennis Club |
| Champions | |
| Men's singles | |
 Rafael Osuna[1] | |
| Women's singles | |
 Maria Bueno | |
| Men's doubles | |
 Chuck McKinley / Dennis Ralston | |
| Women's doubles | |
 Robyn Ebbern / Margaret Smith | |
| Mixed doubles | |
| Margaret Smith / Ken Fletcher | |
The 1963 U.S. National Championships (now known as the US Open) was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York City, United States. The tournament ran from 28 August until 8 September. It was the 83rd staging of the U.S. National Championships, and the fourth Grand Slam tennis event of 1963.
- ^ "1963 US Open – Men's singles draw". Association of Tennis Professionals (ATP).