Edgar Junius Hayes (May 23, 1902 – June 28, 1979) was an influential American jazz pianist and bandleader, known for his contributions to the jazz and early rock 'n' roll scenes. Born in Lexington, Kentucky, Hayes pursued a music degree at Wilberforce University, graduating in the early 1920s. He began his professional career in 1922, touring with Fess Williams, and subsequently formed his own group, the Blue Grass Buddies, in Ohio in 1924. Throughout the 1920s, Hayes played with various ensembles, including Lois Deppe, Eight Black Pirates, and the Symphonic Harmonists.

From 1931 to 1936, Hayes was a pivotal member of the Mills Blue Rhythm Band, contributing as both a pianist and arranger. In 1937, he formed his own orchestra, which included notable musicians such as drummer Kenny Clarke. Hayes achieved considerable success with his recording of "Stardust" and the original version of "In the Mood" in 1938, the latter becoming a swing classic after being covered by Glenn Miller.

In 1942, Hayes relocated to California, where he formed a quartet called the Stardusters and continued to perform into the 1970s. Despite the challenges posed by World War II and recording bans, Hayes remained active in the music scene, recording under his own name in several sessions from 1937 to 1960. He passed away in San Bernardino, California, in 1979, leaving behind a legacy that bridged jazz and early rock 'n' roll.