Béla Anton Leoš Fleck (born July 10, 1958) is an American banjo player. Widely acknowledged as one of the world's most innovative and technically proficient banjo players, he is best known for his work with the bands New Grass Revival and Béla Fleck and the Flecktones. Fleck was born in New York City, New York, and is named after Hungarian composer Béla Bartók, and Czech composers Anton Dvorak and Leoš Janáček. He was drawn to the banjo when he first heard Earl Scruggs play the theme song for the television show Beverly Hillbillies. He received his first banjo at age fifteen from his grandfather (1973).

Later, Fleck enrolled in New York City's High School of Music and Art where he studied the French horn. He was a banjo student under Tony Trischka.

Shortly after high school, Fleck traveled to Boston to play with Jack Tottle, Pat Enright, and Mark Schatz in Tasty Licks. During this period, Fleck released his first solo album (1979): Crossing the Tracks and made his first foray into progressive bluegrass composition.

Fleck played on the streets of Boston with bassist Mark Schatz. The two, along with guitarist/vocalist Glen Lawson and mandolin great Jimmy Gaudreau, formed Spectrum: the Band in 1981.

Fleck toured with Spectrum during 1981. That same year, Sam Bush asked Fleck to join New Grass Revival.

Fleck performed with New Grass Revival for nine years. During this time, Fleck recorded another solo album, Drive.

It was nominated for a Grammy Award in the then first-time category of "Best Bluegrass Album" (1988). During the 1980s Fleck and Bush also performed live occasionally with Doc Watson and Merle Watson in various bluegrass festivals, most notably the annual Telluride Bluegrass Festival.