Chalmers Hadley

Chalmers Hadley (September 3, 1872 – May 11, 1958) was an American librarian and educator. Hadley served as librarian of Denver Public Library from 1911 to 1924 and the Public Library of Cincinnati and Hamilton County from 1924 to 1945.

He was president of the American Library Association from 1919 to 1920.