Clifford Hiram Knox (January 7, 1902 – September 24, 1965) was a professional baseball player. Nicknamed "Bud", he was a catcher for one season (1924) with the Pittsburgh Pirates. For his career, he compiled a .222 batting average in 18 at-bats, with two runs batted in.
He was born in Coalville, Iowa and died in Oskaloosa, Iowa at the age of 63.