Junior Wells (born Amos Wells Blakemore Jr., December 9, 1934 – January 15, 1998) was an American Chicago blues vocalist, harmonica player, and recording artist. He was one of the pioneers of the amplified blues harp-style associated with Chicago. Wells is best known for his signature song "Messin' with the Kid" and his 1965 album Hoodoo Man Blues, described by the critic Bill Dahl as "one of the truly classic blues albums of the 1960s".
Wells performed and recorded with various notable blues musicians, including Muddy Waters, Earl Hooker, and Buddy Guy. He remained a fixture on the blues scene throughout his career and also crossed over to rock audiences while touring with the Rolling Stones. Not long before Wells died, the blues historian Gerard Herzhaft called him "one of the rare active survivors of the 'golden age of the blues'".