Richard Henry Mills (July 19, 1929 – July 16, 2023) was a United States district judge of the United States District Court for the Central District of Illinois.

Born in Beardstown, Illinois, Mills received a Bachelor of Arts degree from Illinois College in 1951, and a Juris Doctor from Mercer University School of Law in 1957.

He was in the United States Army Reserve, JAG Corps from 1952 to 1954, achieving the rank of colonel.

He was a circuit judge of the Eighth Judicial Circuit of Illinois in Virginia from 1966 to 1976, and then a justice of the Appellate Court of Illinois, Fourth District in Springfield from 1976 to 1985.

[1] On June 25, 1985, Mills was nominated by President Ronald Reagan to a seat on the United States District Court for the Central District of Illinois vacated by Judge J. Waldo Ackerman.