1958 U.S. National Championships (tennis)

1958 U.S. National Championships
Date29 August – 7 September
Edition78th
CategoryGrand Slam (ILTF)
SurfaceGrass
LocationForest Hills, Queens
New York City, New York
VenueWest Side Tennis Club
Champions
Men's singles
Ashley Cooper
Women's singles
Althea Gibson
Men's doubles
Alex Olmedo / Ham Richardson
Women's doubles
Jeanne Arth / Darlene Hard
Mixed doubles
Margaret Osborne / Neale Fraser

The 1958 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 29 August until 7 September. It was the 78th staging of the U.S. National Championships, and the fourth Grand Slam tennis event of the year.