The 1973 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, United States.

The tournament ran from 27 August until 9 September.

It was the 93rd staging of the US Open, and the fourth Grand Slam tennis event of 1973.

The 1973 US Open was the first Grand Slam offering equal prize money to both men and women.

[4] John Newcombe defeated Jan Kodeš, 6–4, 1–6, 4–6, 6–2, 6–3 [1] Margaret Court defeated Evonne Goolagong, 7–6, 5–7, 6–2 [2] Owen Davidson / John Newcombe defeated Rod Laver / Ken Rosewall, 7–5, 2–6, 7–5, 7–5 [3] Margaret Court / Virginia Wade defeated Rosemary Casals / Billie Jean King, 3–6, 6–3, 7–5 [2] Billie Jean King / Owen Davidson defeated Margaret Court / Marty Riessen, 6–3, 3–6, 7–6 [2] Billy Martin defeated Colin Dowdeswell, 4–6, 6–3, 6–3 Total prize money for the event was $227,200.