1971 US Open (tennis)

1971 US Open
Date1 – 12 September
Edition91st
CategoryGrand Slam (ITF)
SurfaceGrass
LocationForest Hills, Queens, USA
VenueWest Side Tennis Club
Champions
Men's singles
Stan Smith
Women's singles
Billie Jean King
Men's doubles
John Newcombe / Roger Taylor
Women's doubles
Rosemary Casals / Judy Tegart Dalton
Mixed doubles
Billie Jean King / Owen Davidson

The 1971 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, New York. The tournament ran from 1 September until 12 September. It was the 91st staging of the US Open, and the fourth Grand Slam tennis event of 1971.