| Election Name: | 1831 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1830 New Hampshire gubernatorial election |
| Previous Year: | 1830 |
| Next Election: | 1832 New Hampshire gubernatorial election |
| Next Year: | 1832 |
| Election Date: | March 8, 1831 |
| Nominee1: | Samuel Dinsmoor |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 23,503 |
| Percentage1: | 55.57% |
| Nominee2: | Ichabod Bartlett |
| Party2: | National Republican Party |
| Popular Vote2: | 18,681 |
| Percentage2: | 44.17% |
| Governor | |
| Before Election: | Joseph M. Harper (acting) |
| Before Party: | Democratic Party (United States) |
| After Election: | Samuel Dinsmoor |
| After Party: | Democratic Party (United States) |
The 1831 New Hampshire gubernatorial election was held on March 8, 1831.
Incumbent Democratic Governor Matthew Harvey resigned on February 28, 1831 to take up a seat on the United States District Court for the District of New Hampshire. President of the New Hampshire Senate Joseph M. Harper served as acting Governor for the remainder of Harvey's term.
Democratic nominee Samuel Dinsmoor defeated National Republican nominee Ichabod Bartlett with 55.57% of the vote.