District of South Dakota / Appointed 2009 / Served to 2023

Jeffrey Lynn Viken

Judge, U.S. District Court for the District of South Dakota

Appointed by President Barack Obama in 2009 and confirmed by the Senate 990, Jeffrey Lynn Viken was a Judge on the U.S. District Court for the District of South Dakota. He earned a law degree from University of South Dakota School of Law (now Knudson School of Law) in 1977. Sources: FJC Biographical Directory · Senate confirmation, September 29, 2009

Appointed by
Barack Obama, 2009
Confirmed
99–0
Education
University of South Dakota 1974 · University of South Dakota Law (now Knudson School of Law) 1977
Federal judicial service
YearCourtAppointed byVote
2009District of South Dakota · succeeded Lawrence L. PiersolObama (D)99–0

A per-senator roll-call isn’t shown for this confirmation. The Senate’s recorded roll-call votes begin in 1989; many confirmations (especially before then, and most to the lower courts) were by voice vote or unanimous consent.

Education
Sources

14 years on the District of South Dakota. Data last verified 2026-06-28. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).