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.

This biographical article relating to an American baseball catcher born in the 1900s is a stub.