| Election Name: | 1857 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1856 New Hampshire gubernatorial election |
| Previous Year: | 1856 |
| Next Election: | 1858 New Hampshire gubernatorial election |
| Next Year: | 1858 |
| Election Date: | March 10, 1857 |
| Nominee1: | William Haile |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 34,216 |
| Percentage1: | 51.93% |
| Nominee2: | John S. Wells |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 31,214 |
| Percentage2: | 47.38% |
| Map Size: | 245px |
| Governor | |
| Before Election: | Ralph Metcalf |
| Before Party: | Know Nothing |
| After Election: | William Haile |
| After Party: | Republican Party (United States) |
The 1857 New Hampshire gubernatorial election was held on March 10, 1857.[1]
Incumbent Know Nothing Governor Ralph Metcalf did not stand for re-election.
Republican nominee William Haile defeated Democratic nominee John S. Wells with 51.93% of the vote.