| Election Name: | 1926 United States Senate election in Wisconsin |
| Country: | Wisconsin |
| Flag Year: | 1913 |
| Type: | presidential |
| Ongoing: | Yes |
| Previous Election: | 1920 United States Senate election in Wisconsin |
| Previous Year: | 1920 |
| Next Election: | 1932 United States Senate election in Wisconsin |
| Next Year: | 1932 |
| Election Date: | November 2, 1926 |
| Nominee1: | John J. Blaine |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 299,759 |
| Percentage1: | 54.94% |
| Nominee2: | Charles D. Rosa |
| Party2: | Independent Republican (United States) |
| Popular Vote2: | 111,122 |
| Percentage2: | 20.37% |
| Nominee4: | Thomas M. Kearney |
| Party4: | Democratic Party (United States) |
| Popular Vote4: | 66,672 |
| Percentage4: | 12.22% |
| Nominee5: | Leo Krzycki |
| Party5: | Socialist Party of America |
| Popular Vote5: | 31,317 |
| Percentage5: | 5.74% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Irvine Lenroot |
| Before Party: | Republican Party (United States) |
| After Election: | John J. Blaine |
| After Party: | Republican Party (United States) |
The 1926 United States Senate election in Wisconsin was held on November 2, 1926. Incumbent Senator Irvine Lenroot ran for a second term in office but lost the Republican primary to Governor John J. Blaine. Blaine won the general election over Democratic nominee Thomas Kearney and Socialist Leo Krzycki; his primary opposition, however, came from independent Republican candidate Charles D. Rosa.