| Election Name: | 1974 United States Senate election in South Dakota |
| Country: | South Dakota |
| Flag Year: | 1963 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1968 United States Senate election in South Dakota |
| Previous Year: | 1968 |
| Next Election: | 1980 United States Senate election in South Dakota |
| Next Year: | 1980 |
| Election Date: | November 5, 1974 |
| Nominee1: | George McGovern |
| Image1: | George McGovern (D-SD) (3x4-1).jpg |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 147,929 |
| Percentage1: | 53.04% |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 130,955 |
| Percentage2: | 46.96% |
| Map Size: | 260px |
| U.S. Senator | |
| Before Party: | Democratic Party (US) |
| After Party: | Democratic Party (US) |
The 1974 United States Senate election in South Dakota was held on November 5, 1974. Incumbent Democratic U.S. Senator George McGovern, who had lost the 1972 United States presidential election to Richard Nixon ran for reelection to a third term and won, despite having also lost his home state two years prior.
Primary elections were held on June 4, 1974.