| Election Name: | 1946 United States Senate election in New Jersey |
| Country: | New Jersey |
| Flag Year: | 1896 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1944 United States Senate special election in New Jersey |
| Previous Year: | 1944 (special) |
| Next Election: | 1952 United States Senate election in New Jersey |
| Next Year: | 1952 |
| Election Date: | November 5, 1946 |
| Image1: | File:Howardalexandersmith.jpg |
| Nominee1: | H. Alexander Smith |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 799,808 |
| Percentage1: | 58.50% |
| Nominee2: | George E. Brunner |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 548,458 |
| Percentage2: | 40.12% |
| Map Size: | 280px |
| Senator | |
| Before Election: | H. Alexander Smith |
| Before Party: | Republican Party (United States) |
| After Election: | H. Alexander Smith |
| After Party: | Republican Party (United States) |
The United States Senate election of 1946 in New Jersey was held on November 5, 1946.
Incumbent Republican Senator H. Alexander Smith, who had been elected in a 1944 special election following the death of William Warren Barbour, was re-elected over Democrat George Brunner, the Mayor of Camden.
Senator Smith was unopposed for re-nomination.