| Election Name: | 1936 United States Senate election in Michigan |
| Country: | Michigan |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1930 United States Senate election in Michigan |
| Previous Year: | 1930 |
| Next Election: | 1942 United States Senate election in Michigan |
| Next Year: | 1942 |
| Election Date: | November 3, 1936 |
| Image1: | File:Prentiss M. Brown 1941.png |
| Nominee1: | Prentiss M. Brown |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 910,937 |
| Percentage1: | 53.29% |
| Party2: | Republican Party (US) |
| Popular Vote2: | 714,602 |
| Percentage2: | 41.80% |
| Map Size: | 300px |
| U.S. Senator | |
| Before Party: | Republican Party (US) |
| After Party: | Democratic Party (US) |
The 1936 United States Senate election in Michigan was held on November 3, 1936. Incumbent Republican U.S. Senator James J. Couzens ran for re-election to a third term in office, but was defeated in the Republican primary by Governor Wilber Brucker. Brucker was defeated in the general election by Democratic U.S. Representative Prentiss M. Brown, becoming the first Democrat to win this seat since 1853.
Ward contested the results and ran in the general election as a Third Party candidate.
Senator Couzens died on October 22. After his election, Brown was appointed to complete the remaining two months of Couzens's unexpired term.