How did Johnny Cash get his name?

At birth, Johnny Cash was named J. R. Cash. His parents called him "J.R. Cash" because they could not think of a name.

When Cash enlisted in the United States Air Force, he was not permitted to use initials as a first name, so he changed his name to John R. Cash. He only started using the name "Johnny Cash" as his stage name when he started making music and signing with Sun Records in 1955, when. He traditionally began his concerts by simply introducing himself, "Hello, I'm Johnny Cash," followed by his signature "Folsom Prison Blues". He was also known as "The Man in Black" for his distinctive style of on-stage costuming.