William Clark O'Kelley (born 1930) is a United States federal judge.
Born in Atlanta, Georgia, O'Kelley received an A.B. from Emory University in 1951 and an LL.B. from Emory University School of Law in 1953. He was a U.S. Air Force from 1953 to 1957. He was a U.S. Air Force Reserve from 1957 to 1966. He was in private practice in Atlanta, Georgia from 1957 to 1959. He was an assistant U.S. Attorney of the Northern District of Georgia from 1959 to 1961. He was in private practice in Atlanta, Georgia from 1961 to 1970. He was a Special hearing officer, U.S. Department of Justice from 1962 to 1968. He was a judge on the U.S. Foreign Intelligence Surveillance Court from 1980 to 1987.
O'Kelley was a federal judge on the United States District Court for the Northern District of Georgia. O'Kelley was nominated by President Richard Nixon on October 7, 1970, to a new seat created by 84 Stat. 294. He was confirmed by the United States Senate on October 13, 1970, and received his commission on October 16, 1970. He served as chief judge from 1988-1994. He assumed senior status on October 1, 1996.