Frank Sigel Dietrich (January 23, 1863 – October 2, 1930) was a United States circuit judge of the United States Court of Appeals for the Ninth Circuit and previously was a United States district judge of the United States District Court for the District of Idaho.

Frank Sigel Dietrich
Ninth Circuit Court of Appeals
Born 1863 in Franklin County, KS
Died 1930
FJC ID: 619
Career output and lasting influence
Opinions attributed per year · peak 35/year
Later decisions citing those opinions, per year · peak 41/year
Idaho District Court · 1907–1927Ninth Circuit Court of Appeals · 1927–1930
Both charts share the same year axis. Opinion counts include only opinions in our corpus attributed to this judge so far — a year at zero can mean an attribution gap, not judicial silence. Influence typically outlasts the career: citations keep climbing after the last opinion.
- Gender
- Male
- Race
- White
Prior employment
- Union Pacific RailroadAttorney · 1899–1907
Appointments
1927–1930 · Appointed by Calvin Coolidge (Republican)Term ended: Death
1907–1927 · Appointed by Theodore Roosevelt (Republican)Term ended: Appointment to Another Judicial Position
Education
- Read law1891
- Brown UniversityA.M. · 1890
- Brown UniversityA.B. · 1887