John Primer (born March 5, 1945, Camden, Mississippi, United States) is an American Chicago blues and electric blues singer and guitarist who played behind Junior Wells in the house band at Theresa’s Lounge and as a member of the bands of Willie Dixon, Muddy Waters and Magic Slimbefore launching an award-winning career as a front man, carrying forward the traditional Windy City sound into the 21st century.

Born into a family of Mississippi sharecroppers, Primer grew up imbued with a strong work ethic from his forebears and in a farming community that was deeply involved in the blues tradition, singing work songs in the field during the week and spirituals in church on Sundays. Living on the Mansell Plantation in rural Madison County, he lived in a shack with no running water and a leaking roof with his large, extended family. He shared a bed with cousins, and lost his father at age 22 after a truck accident when he was four years old.