The 1950 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, USA. The tournament ran from 25 August until 5 September. It was the 70th staging of the U.S. National Championships, and the fourth Grand Slam tennis event of the year.
Art Larsen defeated Herb Flam 6–3, 4–6, 5–7, 6–4, 6–3
Margaret Osborne duPont defeated Doris Hart 6–4, 6–3
John Bromwich / Frank Sedgman defeated Bill Talbert / Gardnar Mulloy 7–5, 8–6, 3–6, 6–1 
Louise Brough / Margaret Osborne defeated Shirley Fry / Doris Hart 6–2, 6–3 
Margaret Osborne duPont / Ken McGregor defeated Doris Hart / Frank Sedgman 6–4, 3–6, 6–3 
- ^ Collins, Bud (2010). The Bud Collins History of Tennis (2nd ed.). [New York]: New Chapter Press. pp. 92–94. ISBN 978-0942257700.
- ^ Collins, p. 477
- ^ Collins, p. 480
- ^ Collins, p. 482