Robert Henry “Baby Boy” Warren (August 13, 1919 – July 1, 1977), was an American blues singer and guitarist who was a leading figure on the Detroit bluesscene in the 1950s.

Warren was born in Lake Providence, Louisiana, in 1919, and at the age of three months moved with his parents to Memphis, Tennessee. He was interested in music from an early age and was working occasionally as a musician from around 1931, when he dropped out of school, having learned to play guitar from two of his older brothers.