List of Famous people born in Illinois, United States of America

Main Rousseau Bocher, also known as Mainbocher, was an American couturier best known for the eponymous fashion label he founded in 1929. Although often pronounced "Man-bo-shay," his name is pronounced "Maine-Bocker."

Francis "Dink" Trout was an American actor and radio personality.

Elbert Henry Gary was an American lawyer, county judge and business executive. He was a founder of U.S. Steel in 1901, bringing together partners J. P. Morgan, Andrew Carnegie, and Charles M. Schwab. The city of Gary, Indiana, a steel town, was named for him when it was founded in 1906. Gary, West Virginia was also named after him. When trust busting President Theodore Roosevelt said that Gary was head of the steel trust, Gary considered it a compliment. The two men communicated in a nonconfrontational way, unlike Roosevelt's communications with leaders of other trusts.

Ralph Waldo Gerard LLD DLitt was an American neurophysiologist and behavioral scientist known for his wide-ranging work on the nervous system, nerve metabolism, psychopharmacology, and biological basis of schizophrenia.

Nathan Davis was an American film and television actor.

Arthur Lloyd Thomas was Governor of Utah Territory from 1889 to 1893. Born in Chicago, Illinois, Thomas grew up in Pittsburgh, Pennsylvania.

Paul Harvey was a prolific American character actor who appeared in at least 177 films. He is not to be confused with Paul Harvey the broadcaster.

Sidney D'Albrook was an American actor.