| Election Name: | 1788 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1787 New Hampshire gubernatorial election |
| Previous Year: | 1787 |
| Next Election: | 1789 New Hampshire gubernatorial election |
| Next Year: | 1789 |
| Election Date: | 11 March 1788 |
| Nominee1: | John Langdon |
| Party1: | Anti-Federalist |
| Popular Vote1: | 4,421 |
| Percentage1: | 50.02% |
| Nominee2: | John Sullivan |
| Party2: | Federalist Party |
| Popular Vote2: | 3,664 |
| Percentage2: | 41.46% |
| President | |
| Before Election: | John Sullivan |
| Before Party: | Federalist Party |
| After Election: | John Langdon |
| After Party: | Anti-Federalist |
The 1788 New Hampshire gubernatorial election was held on 11 March 1788 in order to elect the President of New Hampshire. (The office would be renamed to Governor in 1792.) Incumbent Federalist President John Sullivan was defeated in his re-election bid by Anti-Federalist candidate and former President John Langdon, who had initially finished first in the popular vote during the previous President election.[1]
On election day, 11 March 1788, Anti-Federalist candidate and former President John Langdon won the election by a margin of 757 votes against incumbent Federalist President John Sullivan, thereby gaining Anti-Federalist control over the office of President. Langdon was sworn in for his second term on 6 June 1788.[2]