"Man in Black" is a song written and performed by Johnny Cash. It was released as a single in 1971 and later included on the album of the same name. The song is known for its poignant lyrics and the reasons Cash gives for always wearing black clothing. Cash explained that the song was a protest against the treatment of poor and marginalized people, as well as a symbol of solidarity with them.

In the lyrics, Cash mentions various reasons for wearing black, such as representing the prisoners who are often dressed in black uniforms, the struggles of the downtrodden, and the sorrow and mourning for the lives lost in the Vietnam War. The song reflects Cash's social conscience and his commitment to speaking out against injustice.

"Man in Black" became one of Johnny Cash's signature songs, and it remains a powerful and iconic expression of his views on social issues. The song's impact goes beyond its musical qualities, serving as a testament to Cash's role as a musical and cultural figure who used his platform to address important issues of his time.