William Louis Beatty

William Louis Beatty (September 4, 1925 – July 22, 2001) was a United States federal judge.

Born in Mendota, Illinois, Beatty was in the United States Army during World War II, from 1943 to 1946, and then received an LL.B. from the Saint Louis University School of Law in 1950. He was in private practice in Granite City, Illinois from 1950 to 1968, and was a Circuit judge in Madison County, Illinois from 1968 to 1979.

On July 31, 1979, Beatty was nominated by President Jimmy Carter to a new seat on the United States District Court for the Southern District of Illinois created by 93 Stat. 6. He was confirmed by the United States Senate on October 4, 1979, and received his commission on October 5, 1979. He assumed senior status on November 9, 1992, serving in that capacity until his death, in 2001, in Edwardsville, Illinois.