Conrad Earnest (born December 20, 1957) is a retired American soccer goalkeeper and well respected exercise physiologist.

After working for several years at the Cooper Institute in Dallas, Texas, he became the Director of Exercise Biology at the Pennington Biomedical Research Center in Baton Rouge, Louisiana.

[2] Overall, the focus of his scientific research centers on the benefits of exercise in clinical patients at risk for or present with various metabolic diseases.

In addition, he has published a variety of studies examining the use of nutritional supplements aimed at improving sports performance, as well as different health outcomes.

With respect to the high performance athlete, Earnest has published several notable papers with colleagues from Spain examining the physiologic characteristics of professional cyclists competing in the three-week Grand Tours of cycling: The Tour de France, Giro d'Italia, and the Vuelta a España.