James Roger McGuinn (known professionally as Roger McGuinn, previously as Jim McGuinn, and born James Joseph McGuinn III on July 13, 1942)is an American singer-songwriter and guitarist. He is best known for being the lead singer and lead guitarist on many of The Byrds' records. He is a member of the Rock and Roll Hall of Fame for his work with The Byrds.

Roger McGuinn was born and raised in Chicago, Illinois. His parents, James and Dorothy, were involved in journalism and public relations, and during his childhood, they had written a bestseller titled Parents Can't Win. He attended The Latin School of Chicago. He became interested in music after hearing Elvis Presley's "Heartbreak Hotel", and asked his parents to buy him a guitar. (During the early 1980s, he paid tribute to the song that encouraged him to play guitar by including "Heartbreak Hotel" in his autobiographical show). Around the same time, he was also influenced by country artists and/or groups such as Johnny Cash, Carl Perkins, Gene Vincent, and The Everly Brothers.

During 1957, he enrolled as a student at Chicago's Old Town School of Folk Music,where he learned the five-string banjo and continued to improve his guitar skills. After graduation, McGuinn performed solo at various coffeehouses on the folk music circuit where he was hired as a sideman by folk music groups in the same vein as the Limeliters, the Chad Mitchell Trio, and Judy Collins. He also played guitar and sang backup harmonies for Bobby Darin. Soon after, he relocated to the West Coast, eventually Los Angeles, where he eventually met the future members of The Byrds.

During 1962, after he ended his association with the Chad Mitchell Trio, McGuinn was hired by Darin to be a backup guitarist and harmony singer. (At that approximate time, Darin wanted to add some folk roots to his repertoire because it was a burgeoning musical field.) Unfortunately, about a year and a half after McGuinn began to play guitar and sing with Darin, Darin became ill and retired from singing. Subsequently, Darin opened T.M. Music in New York City's Brill Building, hiring McGuinn as a song writer for $35 a week. During 1963, just one year before he co-founded The Byrds, he was a studio musician in New York City, recording with Judy Collins and Simon & Garfunkel. At the same time, he was hearing of The Beatles (whose first American tour would commence in February 1964), and wondering how Beatlemania might affect folk music. By the time Doug Weston gave McGuinn a job in Los Angeles, at the Troubadour, McGuinn had included Beatles' songs in his act. He gave rock style treatments to traditional folk tunes and thereby caught the attention of another folkie Beatle fan, Gene Clark, who joined forces with McGuinn in July 1964. Together they formed the beginning of what was to become The Byrds.