| Election Name: | 1918 South Dakota gubernatorial election |
| Country: | South Dakota |
| Flag Year: | 1909 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1916 South Dakota gubernatorial election |
| Previous Year: | 1916 |
| Next Election: | 1920 South Dakota gubernatorial election |
| Next Year: | 1920 |
| Election Date: | November 5, 1918 |
| Image1: | File:NORBECK, P. SENATOR LCCN2016860878 (cropped).jpg |
| Nominee1: | Peter Norbeck |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 51,175 |
| Percentage1: | 53.22% |
| Nominee2: | Mark P. Bates |
| Party2: | Nonpartisan League |
| Popular Vote2: | 25,118 |
| Percentage2: | 26.12% |
| Image3: | 3x4.svg |
| Nominee3: | James E. Bird |
| Party3: | Democratic Party (United States) |
| Popular Vote3: | 17,858 |
| Percentage3: | 18.57% |
| Map Size: | 250px |
| Governor | |
| Before Election: | Peter Norbeck |
| Before Party: | Republican Party (United States) |
| After Election: | Peter Norbeck |
| After Party: | Republican Party (United States) |
The 1918 South Dakota gubernatorial election was held on November 5, 1918. Incumbent Republican Governor Peter Norbeck ran for re-election to a second term. He won the Republican primary unopposed and faced Nonpartisan League candidate Mark P. Bates, a farmer, and Democratic nominee James E. Bird in the general election. Norbeck's share of the vote decreased from 1916 to 53%, but he benefited from the split field. Bates placed second with 26% of the vote, while Bird placed third with 19% of the vote.
Primary elections were held on May 28, 1918.