| Election Name: | 1840 Maine gubernatorial election |
| Country: | Maine |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1839 Maine gubernatorial election |
| Previous Year: | 1839 |
| Next Election: | 1841 Maine gubernatorial election |
| Next Year: | 1841 |
| Election Date: | 14 September 1840 |
| Nominee1: | Edward Kent |
| Party1: | Whig Party (United States) |
| Popular Vote1: | 45,574 |
| Percentage1: | 49.98% |
| Nominee2: | John Fairfield |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 45,507 |
| Percentage2: | 49.91% |
| Governor | |
| Before Election: | John Fairfield |
| Before Party: | Democratic Party (United States) |
| After Election: | Edward Kent |
| After Party: | Whig Party (United States) |
The 1840 Maine gubernatorial election was held on 14 September 1840 in order to elect the Governor of Maine. Incumbent Democratic Governor of Maine John Fairfield lost re-election in a third rematch against Whig nominee and former Governor of Maine Edward Kent.
On election day, 14 September 1840, Democratic nominee John Fairfield lost re-election by a margin of 67 votes against his opponent Whig nominee Edward Kent, thereby losing Democratic control over the office of Governor to the Whigs. Kent was sworn in as the 15th Governor of Maine on 13 January 1841.[1]