| Election Name: | 1974 South Dakota gubernatorial election |
| Country: | South Dakota |
| Flag Year: | 1963 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1972 South Dakota gubernatorial election |
| Previous Year: | 1972 |
| Next Election: | 1978 South Dakota gubernatorial election |
| Next Year: | 1978 |
| Image1: | File:Dick Kneip.jpg |
| Nominee1: | Richard F. Kneip |
| Party1: | Democratic Party (United States) |
| Running Mate1: | Harvey L. Wollman |
| Popular Vote1: | 149,151 |
| Percentage1: | 53.6% |
| Nominee2: | John E. Olson |
| Party2: | Republican Party (United States) |
| Running Mate2: | Charles Clay |
| Popular Vote2: | 129,077 |
| Percentage2: | 46.4% |
| Map Size: | 260px |
| Governor | |
| Before Election: | Richard F. Kneip |
| Before Party: | Democratic Party (United States) |
| Posttitle: | Governor |
| After Election: | Richard F. Kneip |
| After Party: | Democratic Party (United States) |
The 1974 South Dakota gubernatorial election was held on November 5, 1974, to elect a Governor of South Dakota. This election was the first in South Dakota to elect the governor for a four-year term, after it was allowed by a constitutional amendment passed in 1972.[1] Democratic nominee and Governor Richard F. Kneip was re-elected, defeating Republican nominee John E. Olson., this is the last time that a Democrat was elected Governor of South Dakota, marking the start of the longest Republican winning streak in the country for a state's governorship, as well as the longest gubernatorial winning streak by a single party.