William Joshua Allen (June 9, 1829 – January 26, 1901), frequently known as W. J. Allen, was an American lawyer, jurist, and politician. He served as a United States representative from Illinois and a United States district judge of the United States District Court for the Southern District of Illinois.

William Joshua Allen
Illinois Southern District Court
Born 1829 in Wilson County, TN
Died 1901 in Hot Springs, AR
FJC ID: 29