| Election Name: | 1958 United States Senate election in Wisconsin |
| Country: | Wisconsin |
| Flag Year: | 1913 |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1957 United States Senate elections#Wisconsin |
| Previous Year: | 1957 (special) |
| Next Election: | 1964 United States Senate election in Wisconsin |
| Next Year: | 1964 |
| Election Date: | November 4, 1958 |
| Image1: | File:William Proxmire.jpg |
| Nominee1: | William Proxmire |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 682,440 |
| Percentage1: | 57.13% |
| Nominee2: | Roland J. Steinle |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 510,398 |
| Percentage2: | 42.73% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | William Proxmire |
| Before Party: | Democratic Party (United States) |
| After Election: | William Proxmire |
| After Party: | Democratic Party (United States) |
The 1958 United States Senate election in Wisconsin was held on November 4, 1958. Incumbent Democrat William Proxmire, who had won a special election to finish the term of the late Senator Joe McCarthy, was re-elected to a full term in office over Wisconsin Supreme Court Justice Roland J. Steinle, a Republican.