| Election Name: | 1966 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1964 New Hampshire gubernatorial election |
| Previous Year: | 1964 |
| Next Election: | 1968 New Hampshire gubernatorial election |
| Next Year: | 1968 |
| Election Date: | November 8, 1966 |
| Nominee1: | John W. King |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 125,882 |
| Percentage1: | 53.88% |
| Nominee2: | Hugh Gregg |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 107,259 |
| Percentage2: | 45.91% |
| Map Size: | 240px |
| Governor | |
| Before Election: | John W. King |
| Before Party: | Democratic Party (United States) |
| After Election: | John W. King |
| After Party: | Democratic Party (United States) |
The 1966 New Hampshire gubernatorial election was held on November 8, 1966. Incumbent Democrat John W. King defeated Republican nominee Hugh Gregg with 53.88% of the vote.
Primary elections were held on September 13, 1966.[1]