Harry "Pep" Clark (March 20, 1883 – June 8, 1965) was a Major League Baseball third baseman.

Clark played for the Chicago White Sox in 1903.

In 15 career games, he had 20 hits in 65 at-bats.

Clark was born in Union City, Ohio and died in Milwaukee, Wisconsin.

This biographical article relating to an American baseball third baseman is a stub.