Kenneth Clarke Spearman (January 9, 1914 – January 26, 1985), known professionally as Kenny Clarke and nicknamed Klook, was an American jazz drummer and bandleader. A major innovator of the bebop style of drumming, he pioneered the use of the ride cymbal to keep time rather than the hi-hat, along with the use of the bass drum for irregular accents ("dropping bombs").

Born in Pittsburgh, Pennsylvania, he was orphaned about age five and began playing drums when he was eight or nine at the urging of a teacher at his orphanage. He turned professional in 1931 at age 17; four years later, he moved to New York City where he began to establish his drumming style and reputation. As the house drummer at Minton's Playhouse in the early 1940s, he participated in the after-hours jams that led to the birth of bebop.

After serving in the military in the US and Europe from 1943 to 1946, he returned to New York but was mostly based in Paris between 1948 and 1951. He stayed in New York for the next five years, performing with the Modern Jazz Quartet and playing on early Miles Davis recordings. Clarke then moved permanently to Paris, where he performed and recorded with European and visiting American musicians and co-led the Kenny Clarke/Francy Boland Big Band between 1961 and 1972. He continued to perform and record until shortly before his death of a heart attack in January 1985.