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

Eugene "Jug" Ammons, also known as "The Boss", was an American jazz tenor saxophonist. The son of boogie-woogie pianist Albert Ammons, Gene Ammons is remembered for his accessible music, steeped in soul and R&B.

Peter Victor Ueberroth is an American sports and business executive known for his involvement in the Olympics and in Major League Baseball. A Los Angeles-based businessman, he was the chairman of the Los Angeles Olympic Organizing Committee which brought the games to Los Angeles in 1984. After the conclusion of the games, he was named as the sixth Commissioner of Baseball, a role he held from 1984 to 1989. He later served as the chairman of the United States Olympic Committee from 2004 to 2008.

Peter Barton Wilson is an American attorney and politician. A Republican, he served as a United States Senator and the 36th Governor of California.

Eugene Patrick Kennedy (1919–2011) was an American biochemist known for his work on lipid metabolism and membrane function. He attended DePaul University and then became a PhD student at the University of Chicago. From 1959 to 1993 he worked at Harvard Medical School.

William Edwards Stevenson was an American track and field athlete, lawyer and diplomat, who won the gold medal in the 4 × 400 metres relay at the 1924 Summer Olympics, and later served as the president of Oberlin College.

James Thomas Farrell was an American novelist, short-story writer and poet.

Douglas Moench is an American comic book writer notable for his Batman work and as the creator of Moon Knight, Deathlok, Black Mask, Electric Warrior and Six from Sirius. He is also known for his critically acclaimed eight year run on Master of Kung Fu.

Theodore "Ted" Joans was an American jazz poet, surrealist, trumpeter, and painter. His work stands at the intersection of several avant-garde streams and some have seen in it a precursor to the orality of the spoken-word movement. However he criticized the competitive aspect of "slam" poetry. Joans is known for his motto: "Jazz is my religion, and Surrealism is my point of view".

John Clarke Slater was a noted American physicist who made major contributions to the theory of the electronic structure of atoms, molecules and solids. He also made major contributions to microwave electronics. He received a B.S. in Physics from the University of Rochester in 1920 and a Ph.D. in Physics from Harvard in 1923, then did post-doctoral work at the universities of Cambridge (briefly) and Copenhagen. On his return to the U.S. he joined the Physics Department at Harvard.

William Gilbert Strang, usually known as simply Gilbert Strang or Gil Strang, is an American mathematician, with contributions to finite element theory, the calculus of variations, wavelet analysis and linear algebra. He has made many contributions to mathematics education, including publishing seven mathematics textbooks and one monograph. Strang is the MathWorks Professor of Mathematics at the Massachusetts Institute of Technology. He teaches Introduction to Linear Algebra, Computational Science and Engineering, and Matrix Methods and his lectures are freely available through MIT OpenCourseWare.