Richard Henry Mills (born July 19, 1929) is a senior United States federal judge on the United States District Court for the Central District of Illinois.
Born in Beardstown, Illinois, Mills received a B.A. from Illinois College in 1951, and a J.D. 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 in private practice in Virginia, Illinois from 1957 to 1966, and was a state's attorney of Cass County, Illinois from 1960 to 1964. He was a circuit judge, Eighth Judicial Circuit of Illinois, Virginia, Illinois from 1966 to 1976, and then a Justice of the Appellate Court of Illinois, Fourth District, Springfield, Illinois from 1976 to 1985. He received an LL.M. from the University of Virginia School of Law in 1982.
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 J. Waldo Ackerman. Mills was confirmed by the United States Senate on July 19, 1985, and received his commission on July 22, 1985. He assumed senior status on October 7, 1997.