| Election Name: | 1934 South Dakota gubernatorial election |
| Country: | South Dakota |
| Flag Year: | 1909 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1932 South Dakota gubernatorial election |
| Previous Year: | 1932 |
| Next Election: | 1936 South Dakota gubernatorial election |
| Next Year: | 1936 |
| Election Date: | November 6, 1934 |
| Image1: | File:Tom Berry.jpg |
| Nominee1: | Tom Berry |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 172,228 |
| Percentage1: | 58.60% |
| Nominee2: | William C. Allen |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 119,477 |
| Percentage2: | 40.65% |
| Map Size: | 250px |
| Governor of South Dakota | |
| Before Election: | Tom Berry |
| Before Party: | Democratic Party (United States) |
| After Election: | Tom Berry |
| After Party: | Democratic Party (United States) |
The 1934 South Dakota gubernatorial election was held on November 6, 1934. Incumbent Democratic Governor Tom Berry ran for re-election to a second term. After defeating an intra-party challenge from Lieutenant Governor Hans Ustrud, Berry faced magazine publisher William C. Allen, who won a crowded Republican primary with a large plurality. Aided by the national environment favoring Democrats, Berry won re-election in a landslide.