US District Judge Willaim Alsup

William Haskell Alsup (born 1945) is a United States federal judge.

Born in Jackson, Mississippi, Alsup received a B.S. in mathematics from Mississippi State University in 1967, a J.D. from Harvard University in 1971, and an M.P.P. from Harvard University's John F. Kennedy School of Government in 1971. He was a law clerk to Justice William O. Douglas of the Supreme Court of the United States from 1971 to 1972. Alsup was in private practice in San Francisco, California from 1972 to 1978, and was then an Assistant to the U.S. Solicitor General in the United States Department of Justice from 1978 to 1980. He returned to his private practice in San Francisco from 1980 to 1998, when he briefly served as a special counsel in the Antitrust Division of the Department of Justice in 1998. He was again in private practice in San Francisco from 1998 to 1999.

On March 24, 1999, Alsup was nominated by President Bill Clinton to a seat on the United States District Court for the Northern District of California vacated by Thelton Eugene Henderson. Alsup was confirmed by the United States Senate on July 30, 1999, and received his commission on August 17, 1999.

Alsup is the presiding judge over Oracle America, Inc. v. Google, Inc., where he notably has been able to comment on issues relating to coding and programming languages, specifically Java. He learned the Java programming language solely for the purpose of being able to understand the case more clearly.