Florence Lowe "Pancho" Barnes (July 22, 1901 – March 30, 1975) was a pioneer aviator, the founder of the first movie stunt pilots' union. In 1930, she broke Amelia Earhart's air speed record. Barnes raced in the Women's Air Derby and was a member of the Ninety-Nines (International Organization of Women Pilots). In later years, she was known as the owner of the Happy Bottom Riding Club, a bar and restaurant in the Mojave Desert, Southern California, catering to the test pilots and aviators who worked nearby.

Barnes ran an ad-hoc barnstorming show and competed in air races. Despite a crash in the 1929 Women's Air Derby, she returned in 1930 under the sponsorship of the Union Oil Company to win the race – and break Amelia Earhart's world women's speed record with a speed of 196.19 mph (315.7 km/h). Barnes broke this record in a Travel Air Type R Mystery Ship.

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