William Clarke, American harmonica player (d. 1996)
William Clarke (March 29, 1951 – November 2, 1996) was an American blues harmonica player and singer. He was chiefly associated with the Chicago blues style of amplified harmonica, but also incorporated elements of jump blues, swing, and soul jazz into his playing. Clarke was a master of both cross and chromatic harmonica styles and many consider him among the blues harmonica greats.