Charles Benjamin Clark (August 24, 1844 – September 10, 1891) was a U.S. Representative from Wisconsin and one of the founders of the Kimberly-Clark Corporation in Neenah with John A. Kimberly, Franklyn C. Shattuck, and Havilah Babcock. Clark engaged in mercantile pursuits, banking, and the manufacture of paper, notably Clark was a founder of the Kimberly-Clark Corporation in 1872. He served as mayor of Neenah (1880–83), was a member of its city council from 1883 to 1885, and became a member of the Wisconsin State Assembly in 1885.