| Election Name: | 1842 Massachusetts gubernatorial election |
| Country: | Massachusetts |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1841 Massachusetts gubernatorial election |
| Previous Year: | 1841 |
| Next Election: | 1843 Massachusetts gubernatorial election |
| Next Year: | 1843 |
| Election Date: | November 14, 1842 |
| 1Blank: | Senate vote |
| Nominee1: | Marcus Morton |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 56,491 |
| Percentage1: | 47.88% |
| 1Data1: | 27 |
| Nominee2: | John Davis |
| Party2: | Whig Party (United States) |
| Popular Vote2: | 54,939 |
| Percentage2: | 46.56% |
| 1Data2: | 11 |
| Nominee3: | Samuel E. Sewall |
| Party3: | Liberty Party (United States, 1840) |
| Popular Vote3: | 6,382 |
| Percentage3: | 5.41% |
| 1Data3: | — |
| Map Size: | 300px |
| Governor | |
| Before Election: | John Davis |
| Before Party: | Whig Party (United States) |
| After Election: | Marcus Morton |
| After Party: | Democratic Party (United States) |
The 1842 Massachusetts gubernatorial election consisted of an initial popular election held on November 14, 1842 that was followed by a legislative vote held on January 17, 1843. The ultimate task of electing the governor had been placed before the Massachusetts General Court because no candidate received the majority of the vote that was constitutionally required for a candidate to be elected through the popular election. Incumbent Whig Governor John Davis was defeated by Democratic nominee and former Governor Marcus Morton.
As no candidate received a majority of the vote, the Massachusetts House of Representatives was required nominate two of the four top vote-getters to the Massachusetts Senate, which then chose one of the two as Governor. The House nominated Davis and Morton.[1] [2] The election in the Senate was held on January 17, 1843.