Johnny Hammond (1933–1997), born John Robert Smith, was an American soul-jazz and hard bop organist celebrated for his rich, groove-driven sound and mastery of the Hammond B-3 organ. Rising to prominence in the 1950s and 1960s, he performed with jazz greats such as Gene Ammons and honed a signature blend of blues, funk, and soulful improvisation. Transitioning into fusion and R&B in the 1970s, Hammond released acclaimed albums on Kudu Records, showcasing his versatility and lasting influence on modern jazz and groove music.