William Julius Barker (June 25, 1886 – April 13, 1968), frequently known as W. J. Barker, was an American lawyer and United States district judge of the United States District Court for the Southern District of Florida.

William Julius Barker
Florida Southern District Court
Chief Judge — U.S. District Court for the Southern District of Florida
Born 1886 in Marietta, GA
Died 1968
FJC ID: 95
- Gender
- Male
- Race
- White
Prior employment
- Circuit Court of Florida, Highlands CountyJudge · 1925–1940
- Private practice, Jacksonville, Florida1916–1925
Appointments
1940–1968 · Appointed by Franklin D. Roosevelt (Democratic)Term ended: Death
Education
- University of Florida College of Law (now Fredric G. Levin College of Law)LL.B. · 1916