| 1947 U.S. National Championships | |
|---|---|
| Date | September 6 – 14 | 
| Edition | 67th | 
| Category | Grand Slam (ILTF) | 
| Surface | Grass | 
| Location | Forest Hills, Queens New York City, United States  | 
| Venue | West Side Tennis Club | 
| Champions | |
| Men's singles | |
| Women's singles | |
| Men's doubles | |
| Women's doubles | |
| Mixed doubles | |
The 1947 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 September 6 until September 14. It was the 67th staging of the U.S. National Championships, and the fourth Grand Slam tennis event of the year.[1]
Finals
Men's singles
 Jack Kramer defeated 
 Frank Parker  4–6, 2–6, 6–1, 6–0, 6–3
Women's singles
 Louise Brough defeated 
 Margaret Osborne  8–6, 4–6, 6–1
Men's doubles
 Jack Kramer / 
 Ted Schroeder defeated 
 Bill Talbert / 
 Bill Sidwell 6–4, 7–5, 6–3 [2]
Women's doubles
 Louise Brough / 
 Margaret Osborne defeated 
 Patricia Todd / 
 Doris Hart 5–7, 6–3, 7–5 [3]
Mixed doubles
 Louise Brough /  
 John Bromwich defeated 
 Gussie Moran / 
 Pancho Segura 6–3, 6–1 [4]