| Election Name: | 1918 Idaho gubernatorial election |
| Country: | Idaho |
| Flag Year: | 1907 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1916 Idaho gubernatorial election |
| Previous Year: | 1916 |
| Next Election: | 1920 Idaho gubernatorial election |
| Next Year: | 1920 |
| Election Date: | November 5, 1918 |
| Image1: | File:DWDavis.jpg |
| Nominee1: | D. W. Davis |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 57,626 |
| Percentage1: | 59.95% |
| Nominee2: | H. F. Samuels |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 38,499 |
| Percentage2: | 40.05% |
| Governor | |
| Before Election: | Moses Alexander |
| Before Party: | Democratic Party (United States) |
| After Election: | D. W. Davis |
| After Party: | Republican Party (United States) |
The 1918 Idaho gubernatorial election was held on November 5, 1918. Republican nominee D. W. Davis defeated Democratic nominee H. F. Samuels with 59.95% of the vote.