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

John Ridgely was an American film character actor with over 175 film credits.

Michael Howard Finley is an American former professional basketball player who is the Vice President of Basketball Operations for the Dallas Mavericks of the National Basketball Association (NBA). He played 15 seasons in the NBA, predominantly with the Mavericks but also for the Phoenix Suns, the San Antonio Spurs and the Boston Celtics. He was a two-time NBA All-Star and won an NBA championship with the Spurs in 2007.

Karl August Folkers was an American biochemist who made major contributions to the isolation and identification of bioactive natural products.

Kenneth Allan Anderson is a former American football quarterback who spent his entire professional career playing for the Cincinnati Bengals of the National Football League (NFL) and later returned as a position coach.

John Joseph Hopfield is an American scientist most widely known for his invention of an associative neural network in 1982. It is now more commonly known as the Hopfield network.

Dorothea Margaret Tanning was an American painter, printmaker, sculptor, writer, and poet. Her early work was influenced by Surrealism.

Rhonda Roland Shearer is an American sculptor, scholar, and journalist, who founded the nonprofit organization Art Science Research Laboratory with her late husband Stephen Jay Gould. The mission statement avows that the lab aims to "infuse intellectual rigor and critical thinking in disciplines that range from Academics to Journalism. ASRL researches conventional beliefs and misinformation and transmits its findings by means of scientific methods and state-of-the-art computer technologies."

Brook Maurio, known professionally by the pen name Diablo Cody, is an American writer and producer. She gained recognition for her candid blog and subsequent memoir, Candy Girl: A Year in the Life of an Unlikely Stripper (2005). Cody received critical acclaim for her screenwriting debut film, Juno (2007), winning the Academy Award for Best Original Screenplay, the BAFTA Award for Best Original Screenplay, the Independent Spirit Award for Best First Screenplay, and the Writers Guild of America Award for Best Original Screenplay.

Steven Scott Vogt is an American astronomer of German descent whose main interest is the search for extrasolar planets.

Lonnie Lynn Jr., nicknamed "Pops" was an American basketball player.