| Election Name: | 1818 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1817 New Hampshire gubernatorial election |
| Previous Year: | 1817 |
| Next Election: | 1819 New Hampshire gubernatorial election |
| Next Year: | 1819 |
| Election Date: | March 10, 1818 |
| Nominee1: | William Plumer |
| Party1: | Democratic-Republican Party |
| Popular Vote1: | 18,674 |
| Percentage1: | 59.35% |
| Nominee2: | Jeremiah Mason |
| Party2: | Federalist Party (United States) |
| Popular Vote2: | 6,850 |
| Percentage2: | 21.77% |
| Nominee3: | William Hale |
| Party3: | Federalist Party (United States) |
| Popular Vote3: | 5,019 |
| Percentage3: | 15.95% |
| Governor | |
| Before Election: | William Plumer |
| Before Party: | Democratic-Republican Party |
| After Election: | William Plumer |
| After Party: | Democratic-Republican Party |
The 1818 New Hampshire gubernatorial election was held on March 10, 1818.[1]
Incumbent Democratic-Republican Governor William Plumer defeated Federalist nominees Jeremiah Mason and William Hale.