Gene Nora Stumbough Jessen (January 10, 1937 – May 21, 2024) was an American aviator and a member of Mercury 13. Jessen worked throughout her career as a flight instructor, demonstration pilot, advisor to the Federal Aviation Agency (FAA) and president of the Ninety-Nines. Jessen also wrote about flying and the history of women in flight. Together with Wally Funk, Jessen was one of the last two surviving members of Mercury 13, until her death in 2024.