Lowell Richard Bayles (January 24, 1900 - December 5, 1931) was an air race pilot from the "Golden Age of Air Racing." He was the winner of the 1931 Thompson Trophy flying the Gee Bee Model Z.
Bayles was killed in the crash of the Model Z during an attempt at the landplane speed record when the plane crashed at over 300 miles per hour (483 km/h) mph.