Cornelius James Doyle (December 6, 1871 – April 29, 1938) was an American lawyer and politician.
He learned to become a tailor and worked as a clerk in a clothing store in Carlinville.
In 1903, Doyle served as the superintendent of the Illinois Building of the Louisiana Purchase Exposition.
In 1912, Doyle was appointed Illinois Secretary of State when the incumbent James A.
Doyle died at a hospital in Springfield, Illinois from complications from surgery for appendicitis.