2017 " Sloane Stephens

2016 " Angelique Kerber

2015 " Flavia Pennetta

2014 " Serena Williams

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2013 " Serena Williams

2012 " Serena Williams

2011 " Sam Stosur

2010 " Kim Clijsters

2009 " Kim Clijsters

2008 " Serena Williams

2007 " Justine Henin

2006 " Maria Sharapova

2005 " Kim Clijsters

2004 " Svetlana Kuznetsova

2003 " Justine Henin-Hardenne

2002 " Serena Williams

2001 " Venus Williams

2000 " Venus Williams

1999 " Serena Williams

1998 " Lindsay Davenport

1997 " Martina Hingis

1996 " Steffi Graf

1995 " Steffi Graf

1994 " Arantxa Sanchez Vicario

1993 " Steffi Graf

1992 " Monica Seles

1991 " Monica Seles

1990 " Gabriela Sabatini

1989 " Steffi Graf

1988 " Steffi Graf

1987 " Martina Navratilova

1986 " Martina Navratilova

1985 " Hana Mandlikova

1984 " Martina Navratilova

1983 " Martina Navratilova

1982 " Chris Evert Lloyd

1981 " Tracy Austin

1980 " Chris Evert Lloyd

1979 " Tracy Austin

1978 " Chris Evert

1977 " Chris Evert

1976 " Chris Evert

1975 " Chris Evert

1974 " Billie Jean King

1973 " Margaret Smith Court

1972 " Billie Jean King

1971 " Billie Jean King

1970 " Margaret Smith Court

1969 " Margaret Smith Court

1968 " Virginia Wade

1967 " Billie Jean King

1966 " Maria Bueno

1965 " Margaret Smith

1964 " Maria Bueno

1963 " Maria Bueno

1962 " Margaret Smith

1961 " Darlene Hard

1960 " Darlene Hard

1959 " Maria Bueno

1958 " Althea Gibson

1957 " Althea Gibson

1956 " Shirley Fry

1955 " Doris Hart

1954 " Doris Hart

1953 " Maureen Connolly

1952 " Maureen Connolly

1951 " Maureen Connolly

1950 " Margaret Osbourne duPont

1949 " Margaret Osbourne duPont

1948 " Margaret Osbourne duPont

1947 " Louise Brough

1946 " Pauline Betz

1945 " Sarah Palfrey Cooke

1944 " Pauline Betz

1943 " Pauline Betz

1942 " Pauline Betz

1941 " Sarah Palfrey Cooke

1940 " Alice Marble

1939 " Alice Marble

1938 " Alice Marble

1937 " Anita Lizana

1936 " Alice Marble

1935 " Helen Jacobs

1934 " Helen Jacobs

1933 " Helen Jacobs

1932 " Helen Jacobs

1931 " Hellen Wills Moody

1930 " Betty Nuthall

1929 " Helen Wills

1928 " Helen Wills

1927 " Helen Wills

1926 " Molla Bjurstedt Mallory

1925 " Helen Wills

1924 " Helen Wills

1923 " Helen Wills

1922 " Molla Bjurstedt Mallory

1921 " Molla Bjurstedt Mallory

1920 " Molla Bjurstedt Mallory

1919 " Hazel Hotchkiss Wightman

1918 " Molla Bjurstedt

1917 " Molla Bjurstedt

1916 " Molla Bjurstedt

1915 " Molla Bjurstedt

1914 " Mary K. Browne

1913 " Mary K. Browne

1912 " Mary K. Browne

1911 " Hazel Hotchkiss

1910 " Hazel Hotchkiss

1909 " Hazel Hotchkiss

1908 " Maud Barger Wallach

1907 " Evelyn Sears

1906 " Helen Homans

1905 " Elizabeth Moore

1904 " May Sutton

1903 " Elizabeth Moore

1902 " Marion Jones

1901 " Elizabeth Moore

1900 " Myrtle McAteer

1899 " Marion Jones

1898 " Juliette Atkinson

1897 " Juliette Atkinson

1896 " Elizabeth Moore

1895 " Juliette Atkinson

1894 " Helen Hellwig

1893 " Aline Terry

1892 " Mabel Cahill

1891 " Mabel Cahill

1890 " Ellen Roosevelt

1889 " Bertha Townsend

1888 " Bertha Townsend

1887 " Ellen Hansell

Prior to 1968, the United States National Championships was an amateur event. It became the U.S. Open in 1968 when the tournament was open to professionals.