| T. Loren Christianson | |
| State House: | South Dakota |
| District: | 6th |
| Term Start: | 1977 |
| Term End: | 1994 |
| Birth Date: | 13 July 1926 |
| Birth Place: | Astoria, South Dakota, U.S. |
| Death Place: | Hendricks, Minnesota, U.S. |
| Party: | Republican |
| Spouse: | Gladys L. Schmidt |
| Profession: | Farmer/Insurance Agent |
| Residence: | Astoria, South Dakota |
| Children: | five |
Theodore Loren Christianson (July 13, 1926 – October 25, 2019) was an American politician in the state of South Dakota. He was a member of the South Dakota House of Representatives from 1977 to 1994.[1] Christianson, a Korean War veteran, was a farmer and insurance agent. He also served on the Astoria School Board, as Deuel County Commissioner, as Chairman of the Deuel County Republican Party, as Director of Brookings-Deuel Rural Water System, Director of South Dakota Association of Rural Water Systems, and as Director of Deuel County Farm Mutual Insurance Company.[2] He died in 2019.[3]