Jeffrey Lynn Viken | |
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| Senior Judge of the United States District Court for the District of South Dakota | |
| In office October 1, 2021 – October 1, 2023 | |
| Chief Judge of the United States District Court for the District of South Dakota | |
| In office January 1, 2013 – December 31, 2019 | |
| Preceded by | Karen Schreier |
| Succeeded by | Roberto Lange |
| Judge of the United States District Court for the District of South Dakota | |
| In office September 30, 2009 – October 1, 2021 | |
| Appointed by | Barack Obama |
| Preceded by | Lawrence L. Piersol |
| Succeeded by | Camela C. Theeler |
| Personal details | |
| Born | Jeffrey Lynn Viken August 8, 1952 Huron, South Dakota, U.S. |
| Education | University of South Dakota (BA, JD) |
Jeffrey Lynn Viken (born August 8, 1952) is a former United States district judge of the United States District Court for the District of South Dakota.