William B. Shubb (born 1938) is a United States federal judge.
Born in Oakland, California, Shubb received an A.B. from the University of California, Berkeley in 1960 and a J.D. from the University of California, Berkeley, Boalt Hall School of Law in 1963. He was a law clerk, Hon. Sherrill Halbert, U.S. District Court, Eastern District of California from 1963 to 1965. He was an assistant U.S. Attorney of the Eastern District of California from 1965 to 1971. He was a Chief assistant U.S. attorney of Eastern District of California from 1971 to 1974. He was in private practice in Sacramento, California from 1974 to 1980. He was the United States Attorney for the Eastern District of California from 1980 to 1981. He was in private practice in Sacramento, California from 1981 to 1990.
Shubb is a federal judge on the United States District Court for the Eastern District of California. Shubb was nominated by President George H. W. Bush on August 3, 1990, to a seat vacated by Raul A. Ramirez. He was confirmed by the United States Senate on September 28, 1990, and received his commission on October 1, 1990. He served as chief judge from 1996-2003. He assumed senior status on November 1, 2004.