| Election Name: | 1936 United States Senate election in South Dakota |
| Country: | South Dakota |
| Flag Year: | 1909 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1930 United States Senate election in South Dakota |
| Previous Year: | 1930 |
| Next Election: | 1942 United States Senate election in South Dakota |
| Next Year: | 1942 |
| Election Date: | November 3, 1936 |
| Image1: | File:Bulowwilliam.jpg |
| Nominee1: | William J. Bulow |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 141,509 |
| Percentage1: | 48.83% |
| Nominee2: | Chan Gurney |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 135,461 |
| Percentage2: | 46.75% |
| Map Size: | 240px |
| U.S. Senator | |
| Before Election: | William J. Bulow |
| Before Party: | Democratic Party (United States) |
| After Election: | William J. Bulow |
| After Party: | Democratic Party (United States) |
The 1936 United States Senate election in South Dakota took place on November 3, 1936. Incumbent Democratic Senator William J. Bulow ran for re-election to a second term. He was challenged by businessman Chan Gurney, who defeated former Congressman Charles A. Christopherson in the Republican primary. Bulow, likely aided by President Franklin D. Roosevelt's landslide victory in South Dakota, narrowly defeated Gurney to win his second term, though he significantly underperformed Roosevelt.
Senator Bulow was the only Democratic candidate to file for the Senate; accordingly, no election occurred and the race did not appear on the primary election ballot.[1]