| Election Name: | 1809 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1808 New Hampshire gubernatorial election |
| Previous Year: | 1808 |
| Next Election: | 1810 New Hampshire gubernatorial election |
| Next Year: | 1810 |
| Election Date: | March 14, 1809 |
| Nominee1: | Jeremiah Smith |
| Party1: | Federalist Party (United States) |
| Popular Vote1: | 15,610 |
| Percentage1: | 50.38% |
| Nominee2: | John Langdon |
| Party2: | Democratic-Republican Party (United States) |
| Popular Vote2: | 15,241 |
| Percentage2: | 49.19% |
| Governor | |
| Before Election: | John Langdon |
| Before Party: | Democratic-Republican Party (United States) |
| After Election: | Jeremiah Smith |
| After Party: | Federalist Party (United States) |
The 1809 New Hampshire gubernatorial election took place on March 14, 1809. Incumbent Democratic-Republican Governor John Langdon was defeated for re-election by Federalist candidate, Chief Justice of the New Hampshire Superior Court of Judicature Jeremiah Smith.