| Election Name: | 1958 United States Senate election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1952 United States Senate election in Delaware |
| Previous Year: | 1952 |
| Next Election: | 1964 United States Senate election in Delaware |
| Next Year: | 1964 |
| Election Date: | November 4, 1958 |
| Nominee1: | John J. Williams |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 82,280 |
| Percentage1: | 53.28% |
| Nominee2: | Elbert Carvel |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 72,152 |
| Percentage2: | 46.72% |
| Map Size: | 210px |
| U.S. Senator | |
| Before Election: | John J. Williams |
| Before Party: | Republican Party (United States) |
| After Election: | John J. Williams |
| After Party: | Republican Party (United States) |
The 1958 United States Senate election in Delaware took place on November 4, 1958. Incumbent Republican U.S. Senator John J. Williams was re-elected to a third term in office over Democratic former Governor Elbert Carvel.