| Election Name: | 1918 United States Senate election in Tennessee |
| Country: | Tennessee |
| Flag Year: | 1911 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1913 United States Senate election in Tennessee |
| Previous Year: | 1913 |
| Next Election: | 1924 United States Senate election in Tennessee |
| Next Year: | 1924 |
| Image1: | File:John Knight Shields.jpg |
| Nominee1: | John K. Shields |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 98,605 |
| Percentage1: | 62.17% |
| Nominee2: | Henry Clay Evans |
| Party2: | Republican Party (US) |
| Popular Vote2: | 59,989 |
| Percentage2: | 37.83% |
| U.S. senator | |
| Before Election: | John K. Shields |
| Before Party: | Democratic Party (US) |
| After Election: | John K. Shields |
| After Party: | Democratic Party (US) |
| Election Date: | November 5, 1918 |
The 1918 United States Senate election in Tennessee took place on November 5, 1918, concurrently with the United States Senate elections in other states as well as elections to the United States House of Representatives and various state and local elections. Incumbent Democratic Senator John K. Shields won re-election to a second term, defeating Republican candidate Henry Clay Evans.[1] [2]
This was the second popular election for U.S. Senator held in Tennessee, following the ratification of the Seventeenth Amendment to the United States Constitution.