Ralph Emerson Campbell (May 9, 1867 – January 9, 1921) was a United States district judge of the United States District Court for the Eastern District of Oklahoma.

Ralph E. Campbell
Oklahoma Eastern District Court
Born 1867 in Butler County, PA
Died 1921 in Tulsa, OK
FJC ID: 365
- Gender
- Male
- Race
- White
Prior employment
- Cosden and Company, Tulsa, OklahomaAttorney · 1918–1921
- Private practice, South McAlester, Indian Territory1905–1907
- Choctaw, Oklahoma and Gulf Railroad, Oklahoma TerritoryGeneral attorney · 1901–1903
- Choctaw, Oklahoma and Gulf Railroad, Indian Territory and ArkansasAssistant general solicitor · 1895–1901
Appointments
1908–1918 · Appointed by Theodore Roosevelt (Republican)Term ended: Resignation
Education
LL.B. · 1894- Northern Indiana Normal School (now Valparaiso University)A.B. · 1892
- Northern Indiana Normal School (now Valparaiso University)B.S. · 1891