1966 U.S. National Championships (tennis)

The 1966 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, New York. The tournament ran from 1 September until 11 September. It was the 86th staging of the U.S. National Championships, and the fourth Grand Slam tennis event of 1966.

1966 U.S. National Championships
Date	September 1–11
Edition	86th
Category	Grand Slam (ITF)
Surface	Grass
Location	Forest Hills, Queens New York City, New York
Venue	West Side Tennis Club
Champions
Men's singles
Fred Stolle[1]
Women's singles
Maria Bueno
Men's doubles
Roy Emerson / Fred Stolle
Women's doubles
Maria Bueno / Nancy Richey
Mixed doubles
Donna Floyd / Owen Davidson

Finals

Men's singles

Main article: 1966 U.S. National Championships – Men's singles

Fred Stolle defeated John Newcombe 4–6, 12–10, 6–3, 6–4

Women's singles

Main article: 1966 U.S. National Championships – Women's singles

Maria Bueno defeated Nancy Richey 6–3, 6–1

Men's doubles

Roy Emerson / Fred Stolle defeated Clark Graebner / Dennis Ralston 6–4, 6–4, 6–4 ^[2]

Women's doubles

Maria Bueno / Nancy Richey defeated Rosie Casals / Billie Jean King 6–3, 6–4 ^[3]

Mixed doubles

Donna Floyd-Fales / Owen Davidson defeated Carol Hanks Aucamp / Ed Rubinoff 6–1, 6–3 ^[4]