Doris Hart (born on June 2, 1925 in St. Louis) was a tennis champion in singles, doubles and mixed doubles, and is in the Tennis Hall of Fame. She started playing tennis when she was 10 years old, greatly encouraged by her brother Bud. Hart's first Grand Slam singles title came in the 1949 Australian championships. She went on to win the French singles in 1950 and 1952, Wimbledon in 1951, and the U.S. singles in 1954 and 1955. In 1951, she beat her long-time doubles partner, Shirley Fry in the Wimbledon finals.

She had great success in doubles, winning the women's doubles at Wimbledon in 1947 and from 1951 through 1953; at the French championships in 1948 and from 1950 to 1953, at the U.S. championships from 1951 to 1954, and in Australia in 1950. Hart won most of those titles with Shirley Fry.

In mixed doubles, Hart won championships at Wimbledon from 1951 to 1956 and at the U.S. Nationals from 1951 to 1955, giving her a total of 34 Grand Slam titles.

Hart is one of three players, all women, to have a "boxed set" of Grand Slam titles—every possible title (singles, same-sex doubles, and mixed doubles) from all four Grand Slam events. The others are Margaret Smith Court and Martina Navratilova.