| Election Name: | 2004 New Hampshire gubernatorial election |
| Country: | New Hampshire |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2002 New Hampshire gubernatorial election |
| Previous Year: | 2002 |
| Next Election: | 2006 New Hampshire gubernatorial election |
| Next Year: | 2006 |
| Election Date: | November 2, 2004 |
| Image1: | File:John Lynch (cropped).jpg |
| Nominee1: | John Lynch |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 340,299 |
| Percentage1: | 51.0% |
| Nominee2: | Craig Benson |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 325,981 |
| Percentage2: | 48.9% |
| Governor | |
| Before Election: | Craig Benson |
| Before Party: | Republican Party (United States) |
| After Election: | John Lynch |
| After Party: | Democratic Party (United States) |
The 2004 New Hampshire gubernatorial election occurred on November 2, 2004, concurrent with that year's presidential election. Democrat John Lynch, a multimillionaire businessman from Hopkinton, narrowly defeated incumbent Republican Governor Craig Benson of Rye, winning a two-year term. Benson was the first New Hampshire governor in 80 years to lose reelection after one term. Lynch was sworn in on January 6, 2005.
To date, Benson is the most recent incumbent governor to lose reelection in any New England state.