| Election Name: | 1948 United States Senate election in New Hampshire |
| Country: | New Hampshire |
| Flag Year: | 1931 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1942 United States Senate election in New Hampshire |
| Previous Year: | 1942 |
| Next Election: | 1954 United States Senate election in New Hampshire |
| Next Year: | 1954 |
| Election Date: | November 2, 1948 |
| Image1: | File:StylesBridges(R-NH) (cropped, 3x4).jpg |
| Nominee1: | Styles Bridges |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 129,600 |
| Percentage1: | 58.14% |
| Nominee2: | Alfred E. Fortin |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 91,760 |
| Percentage2: | 41.17% |
| Map Size: | 245px |
| U.S. Senator | |
| Before Election: | Styles Bridges |
| Before Party: | Republican Party (United States) |
| After Election: | Styles Bridges |
| After Party: | Republican Party (United States) |
The 1948 United States Senate election in New Hampshire took place on November 2, 1948. Incumbent Republican Senator Styles Bridges won re-election to a third term in office, defeating Democrat Alfred Fortin.
Primary elections were held on September 14, 1948.