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]

Frank Parker defeated William Talbert 6–4, 3–6, 6–3, 6–3

Pauline Betz defeated Margaret Osborne 6–3, 8–6

Don McNeill / Bob Falkenburg defeated Bill Talbert / Pancho Segura 7–5, 6–4, 3–6, 6–1 ^[2]

Louise Brough / Margaret Osborne defeated Pauline Betz / Doris Hart 4–6, 6–4, 6–3 ^[3]

Margaret Osborne / Bill Talbert defeated Dorothy Bundy / Don McNeill 6–2, 6–3 ^[4]

• Official US Open website