Yvonne Darlene Cagle (born April 24, 1959) is an American physician, professor, retired U.S. Air Force Colonel, and NASA astronaut.

[4] In 2014, Cagle was a visiting professor to Fordham University where she participated in interdisciplinary research in health, environment and human performance.

[5] She was awarded an honorary Ph.D. by Fordham University for significant contributions to the fields of science, technology, and human health.

[8] She was on the faculty of Singularity University[9] and still serves as their NASA liaison for exploration and space development.

She holds adjunct professorships with Stanford University, UC Davis, and UTMB, Galveston.