Eleanor (1798 – c. 1824) was a British Thoroughbred racehorse bred by Charles Bunbury and was the first female horse to win The Derby.

Through the produce of her daughter Active (the grandam of Woodburn), Eleanor is present in the pedigrees of 19th-century American Standardbred racehorses.

Eleanor was foaled in 1798 at Barton Hall near Bury St. Edmunds, the ancestral home of her breeder Charles Bunbury.

Eleanor's first race occurred on 20 April in Newmarket at the First Spring meeting where she beat the filly Miss Fuery and won 250 guineas.

A colt by Fidget (owned by Lord Egremont) was second and the Duke of Grafton's filly Remnant sired by Trumpetor was third.

[9] At Ascot, she finished second in a 215-guinea sweepstakes to a colt sired by Asparagus (later named Teddy the Grinder) while carrying 7 pounds more weight than the other racers as a handicap for her wins in the Derby and the Oaks.

At the First October meeting in Newmarket, Eleanor regained her three-year-old form and defeated the mare Penelope, winning 350 guineas.

At the Second October meeting at Newmarket, her last engagement of the season, Eleanor won £50 in a stakes race by beating the Prince of Wales' horse Shock.

[9] At the Newmarket-Craven meeting, Eleanor received 200 guineas from Mr. Sitwell after his horse Fieldfare forfeited a three-mile match race.

At the First Spring meeting in Newmarket, she was second in the King's Plate to Lord Sackville's horse Dick Andrews (later the sire of Eleanor's 1814 filly foal).

[13] On 3 May during the Second Spring meeting at Newmarket, Eleanor received 40 guineas from Mr. Mellish after his filly Surprise forfeited a match race.

[14] Ten days later at Brocket Hall, Eleanor lost a 100-guinea Gold Cup race to Mr. Dawson's horse Quiz.

[16] Six days later at the July Meeting at Newmarket, Eleanor won a £50 race against four other younger horses, beating the Duke of Queensberry's three-year-old colt Moorcock.

Charles Bunbury died in March 1821 and all the horses at Barton Hall were auctioned in the spring of 1822, where Eleanor (listed as "Ellinor") was sold for just over £91.