| Election Name: | 1803 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1802 New Hampshire gubernatorial election |
| Previous Year: | 1802 |
| Next Election: | 1804 New Hampshire gubernatorial election |
| Next Year: | 1804 |
| Election Date: | March 8, 1803 |
| Nominee1: | John Taylor Gilman |
| Party1: | Federalist Party (United States) |
| Popular Vote1: | 12,263 |
| Percentage1: | 57.53% |
| Nominee2: | John Langdon |
| Party2: | Democratic-Republican Party (United States) |
| Popular Vote2: | 9,011 |
| Percentage2: | 42.27% |
| Governor | |
| Before Election: | John Taylor Gilman |
| Before Party: | Federalist Party (United States) |
| After Election: | John Taylor Gilman |
| After Party: | Federalist Party (United States) |
The 1803 New Hampshire gubernatorial election took place on March 8, 1803. Incumbent Federalist Governor John Taylor Gilman won re-election to a tenth term, defeating Democratic-Republican candidate, former Governor and United States Senator John Langdon in a re-match of the previous year's election.