The Kuf-Linx were an American rhythm and blues vocal group active during the late 1950s. Notably, the group included singer John "J.C." Gyles, Jr., who later achieved solo fame. Their sound was characterized by a distinctive blend of harmony and rhythm, typical of the era's doo-wop style. Though their commercial success was limited, with their only charting single being "Service with a Smile," their contribution to the development of rhythm and blues music is recognized within the industry.