Bernard Matthew Leadon III is an American singer, musician, songwriter, and founding member of the Eagles, for which he was inducted into the Rock and Roll Hall of Fame in 1998. Prior to the Eagles, he was a member of three country rock bands: Hearts & Flowers, Dillard & Clark, and the Flying Burrito Brothers. He is a multi-instrumentalist coming from a bluegrass background. He introduced elements of this music to a mainstream audience during his tenure with the Eagles.

The Eagles are an American rock band formed in Los Angeles in 1971. With five number-one singles and six number-one albums, six Grammy Awards and five American Music Awards, the Eagles were one of the most successful musical acts of the 1970s in North America and are one of the world's best-selling bands, having sold more than 200 million records worldwide, including 100 million sold in the US alone. They were inducted into the Rock and Roll Hall of Fame in 1998 and were ranked number 75 on Rolling Stone's 2004 list of the "100 Greatest Artists of All Time". Founding members Glenn Frey, Don Henley, Bernie Leadon, and Randy Meisner were recruited by Linda Ronstadt as band members, some touring with her, and all playing on her third solo album, before venturing out on their own on David Geffen's new Asylum Records label.