William Stewart Thompson (born 1969)[1] is the United States attorney for the Southern District of West Virginia since 2021.

[3][2] In 1992, Thompson was a civil engineer for American Electric Power in Columbus, Ohio;[2] he also served as president of Madison Healthcare, Incorporated from 1997 to 2007, and as vice president of Danville Lumber Company from 1994 to 2007. he was an associate at the law firm of Cook and Cook in Madison, West Virginia from 1995 to 2007.

His primary focus was litigation, which included representing several hundred indigent clients in criminal defense and other matters.

[5][6] On August 10, 2021, President Joe Biden nominated Thompson to be the United States Attorney for the Southern District of West Virginia.

[9] On October 13, 2021, he was sworn in by Chief United States District Judge Thomas E. Johnston in a private ceremony.