| Election Name: | 1857 Maine gubernatorial election |
| Country: | Maine |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1856 Maine gubernatorial election |
| Previous Year: | 1856 |
| Next Election: | 1858 Maine gubernatorial election |
| Next Year: | 1858 |
| Election Date: | 14 September 1857 |
| Nominee1: | Lot M. Morrill |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 54,655 |
| Percentage1: | 55.84% |
| Nominee2: | Manassah H. Smith |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 42,968 |
| Percentage2: | 43.90% |
| Governor | |
| Before Election: | Joseph H. Williams (Acting) |
| Before Party: | Republican Party (United States) |
| After Election: | Lot M. Morrill |
| After Party: | Republican Party (United States) |
The 1857 Maine gubernatorial election was held on 14 September 1857 in order to elect the Governor of Maine. Republican nominee Lot M. Morrill defeated Democratic nominee Manassah H. Smith.[1]
On election day, 14 September 1857, Republican nominee Lot M. Morrill won the election by a margin of 11,687 votes against his opponent Democratic nominee Manassah H. Smith, thereby retaining Republican control over the office of governor. Morrill was sworn in as the 28th Governor of Maine on 6 January 1858.[2]