The 1924 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 women's tournament was held from August 11 until August 16 while the men's tournament ran from August 25 until September 2. It was the 44th staging of the U.S. National Championships and the third Grand Slam tennis event of the year.
See main article: 1924 U.S. National Championships – Men's singles. 
Bill Tilden defeated Bill Johnston 6–1, 9–7, 6–2
See main article: 1924 U.S. National Championships – Women's singles. Helen Wills defeated Molla Mallory 6–1, 6–3
Howard Kinsey / Robert Kinsey defeated 
Gerald Patterson / Pat O'Hara Wood 7–5, 5–7, 7–9, 6–3, 6–4
Hazel Hotchkiss Wightman / Helen Wills defeated Eleanor Goss / Marion Zinderstein Jessup 6–4, 6–3
Helen Wills / Vincent Richards defeated Molla Mallory / Bill Tilden 6–8, 7–5, 6–0