The 1974 US Open was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club in Forest Hills, Queens, in New York City in the United States. The tournament ran from 26 August until 8 September. It was the 94th staging of the US Open, and the fourth Grand Slam tennis event of 1974. The girls’ championship was introduced in 1974, and it was the last year the tournament was played on grass courts.[1]
See main article: 1974 US Open – Men's singles. 
Jimmy Connors defeated 
Ken Rosewall, 6–1, 6–0, 6–1
See main article: 1974 US Open – Women's singles. Billie Jean King defeated Evonne Goolagong, 3–6, 6–3, 7–5
See main article: 1974 US Open – Men's doubles. Bob Lutz / Stan Smith defeated Patricio Cornejo / Jaime Fillol, 6–3, 6–3
See main article: 1974 US Open – Women's doubles. Rosemary Casals / Billie Jean King defeated 
Françoise Dürr / Betty Stöve, 7–6, 6–7, 6–4
See main article: 1974 US Open – Mixed doubles. Pam Teeguarden / Geoff Masters defeated Chris Evert / Jimmy Connors, 6–1, 7–6
Billy Martin defeated Ferdi Taygan, 6–4, 6–2
Ilana Kloss defeated Mima Jaušovec, 6–4, 6–3