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 11 August until 16 August while the men's tournament ran from 25 August until 2 September. It was the 44th staging of the U.S. National Championships and the third Grand Slam tennis event of the year.