| Election Name: | 1806 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1805 New Hampshire gubernatorial election |
| Previous Year: | 1805 |
| Next Election: | 1807 New Hampshire gubernatorial election |
| Next Year: | 1807 |
| Election Date: | March 11, 1806 |
| Nominee1: | John Langdon |
| Party1: | Democratic-Republican Party |
| Popular Vote1: | 15,277 |
| Percentage1: | 74.26% |
| Nominee2: | Timothy Farrar |
| Party2: | Federalist Party (United States) |
| Popular Vote2: | 1,720 |
| Percentage2: | 8.36% |
| Nominee3: | John Taylor Gilman |
| Party3: | Federalist Party (United States) |
| Popular Vote3: | 1,553 |
| Percentage3: | 7.55% |
| Governor | |
| Before Election: | John Langdon |
| Before Party: | Democratic-Republican Party |
| After Election: | John Langdon |
| After Party: | Democratic-Republican Party |
The 1806 New Hampshire gubernatorial election was held on March 11, 1806.
Incumbent Democratic-Republican Governor John Langdon won re-election to a second term.
The following candidates may not have been formally nominated and attracted only scattering votes.[1]