The 1944 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 August 30 until September 4. It was the 64th staging of the U.S. National Championships and due to World War II it was the only Grand Slam tennis event of the year.[1]
| 1944 U.S. National Championships | |
|---|---|
| Date | August 30 – September 4 |
| Edition | 64th |
| Category | Grand Slam (ITF) |
| Surface | Grass |
| Location | Forest Hills, Queens New York City, United States |
| Venue | West Side Tennis Club |
| Champions | |
| Men's singles | |
 Frank Parker | |
| Women's singles | |
| Pauline Betz | |
| Men's doubles | |
| Don McNeill / Bob Falkenburg | |
| Women's doubles | |
| Louise Brough / Margaret Osborne | |
| Mixed doubles | |
| Margaret Osborne / Bill Talbert | |
Finals
Men's singles
Frank Parker defeated William Talbert 6–4, 3–6, 6–3, 6–3
Women's singles
Pauline Betz defeated Margaret Osborne 6–3, 8–6
Men's doubles
Don McNeill / Bob Falkenburg defeated 
Bill Talbert / 
Pancho Segura 7–5, 6–4, 3–6, 6–1 [2]
Women's doubles
Louise Brough / Margaret Osborne defeated Pauline Betz / Doris Hart 4–6, 6–4, 6–3 [3]
Mixed doubles
Margaret Osborne / Bill Talbert defeated Dorothy Bundy / Don McNeill 6–2, 6–3 [4]