| Election Name: | 1970 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1968 New Hampshire gubernatorial election |
| Previous Year: | 1968 |
| Next Election: | 1972 New Hampshire gubernatorial election |
| Next Year: | 1972 |
| Election Date: | November 3, 1970 |
| Nominee1: | Walter R. Peterson Jr. |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 102,298 |
| Percentage1: | 45.99% |
| Nominee2: | Roger J. Crowley |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 98,098 |
| Percentage2: | 44.10% |
| Nominee3: | Meldrim Thomson Jr. |
| Party3: | American Party (1969) |
| Popular Vote3: | 22,033 |
| Percentage3: | 9.91% |
| Map Size: | 240px |
| Governor | |
| Before Election: | Walter R. Peterson Jr. |
| Before Party: | Republican Party (United States) |
| After Election: | Walter R. Peterson Jr. |
| After Party: | Republican Party (United States) |
The 1970 New Hampshire gubernatorial election was held on November 3, 1970.
Incumbent Republican Governor Walter R. Peterson Jr. defeated Democratic nominee Roger J. Crowley with 45.99% of the vote.
Primary elections were held on September 8, 1970.