|Full name||Eleonora Randolph Sears|
October 28, 1881|
Boston, MA, United States
|Died||March 16, 1968
Palm Beach, FL, United States
|Int. Tennis HOF||1968 (member page)|
|Highest ranking||No.6 (US ranking)|
|Grand Slam Singles results|
|US Open||F (1912)|
|Grand Slam Doubles results|
|US Open||W (1911, 1915, 1916, 1917)|
|Grand Slam Mixed Doubles results|
|US Open||W (1916)|
Eleonora Randolph Sears (September 28, 1881, Boston – March 16, 1968 Palm Beach) was an American tennis player of the interwar period. In addition, she was a champion squash player, and prominent in other sports; she's considered one of the leading all-round women athletes of the first half of the 20th century.
She won the women's doubles at the US Women's National Championship four times, including three consecutively (1915–1917). In singles, she was a finalist in 1912, where she was beaten in straight sets by Mary Kendall Browne.
Eleonora Sears rode horses competitively and was elected to the US Show Jumping Hall of Fame in 1992. She also owned and raced Thoroughbred horses. She was the first woman to play polo on a men’s team.
Sears was the first female national squash champion, a founder of the Women’s Squash Racquets Association, and coach of the U.S. Women’s International Squash Team. 
She gained media attention for her long distance walks and hikes. As well, she was one of the first American women to drive an automobile and fly a plane.  Her habit of wearing trousers, both when competing in sports and in public, was criticized in media and social circles. 
Grand Slam finals
Singles: 1 (1 runner-up)
|Runner-up||1912||U.S. National Championships||Mary Kendall Browne||4–6, 2–6|
Doubles: 5 (4 titles, 1 runner-up)
|Winner||1911||U.S. National Championships||Hazel Hotchkiss|| Dorothy Green
|6–4, 4–6, 6–2|
|Winner||1915||U.S. National Championships||Hazel Hotchkiss|| Helen McLean
Mrs. G. L. Chapman
|Winner||1916||U.S. National Championships||Molla Bjurstedt|| Louise Raymond
|4–6, 6–2, 10–8|
|Winner||1917||U.S. National Championships||Molla Bjurstedt|| Phyllis Walsh
Grace Robert LeRoy
|Runner-up||1919||U.S. National Championships||Hazel Hotchkiss|| Marion Zinderstein
Mixed doubles: 2 (1 title, 1 runner-up)
|Runner-up||1912||U.S. National Championships||William Clothier|| Mary Kendall Browne
|4–6, 6–2, 9–11|
|Winner||1916||U.S. National Championships||Willis E. Davis|| Florence Ballin
- Peggy Miller Franck (June 22, 2012). "The Mother of Title IX: Trailblazing Athlete Eleonora Sears". The Daily Beast.
- "Six Hospitals Contest Will of Eleanora Sears". Palm Beach Daily News. February 22, 1969. Retrieved June 22, 2012.
- Show Jumping Hall of Fame
- "Will Eleanora Sears Stop Wearing Em Now?: Fashionable Miss Sears Requested by the "Mothers" of Burlingame to Cover". Atlanta Constitution. May 26, 1912. pp. C12D.