| Election Name: | 1850 Boston mayoral election |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1849 Boston mayoral election |
| Previous Year: | 1849 |
| Election Date: | December 9, 1850 |
| Next Election: | 1851 Boston mayoral election |
| Next Year: | 1851 |
| Image1: | John P. Bigelow 5210004 015 012 (3x4).jpg |
| Candidate1: | John P. Bigelow |
| Party1: | Whig Party (United States) |
| Popular Vote1: | 5,473 |
| Percentage1: | 63.45% |
| Candidate2: | Charles Coffin Amory Sr. |
| Party2: | Independent Whig |
| Popular Vote2: | 1,169 |
| Percentage2: | 13.55% |
| Candidate4: | Charles B. Goodrich |
| Party4: | Democratic Party (United States) |
| Popular Vote4: | 1,094 |
| Percentage4: | 12.68% |
| Candidate5: | Benjamin B. Mussey |
| Party5: | Free Soil Party |
| Popular Vote5: | 882 |
| Percentage5: | 9.53% |
| Mayor | |
| Before Election: | John P. Bigelow |
| Before Party: | Whig Party (United States) |
| After Election: | John P. Bigelow |
| After Party: | Whig Party (United States) |
The 1850 Boston mayoral election saw the reelection of incumbent Whig mayor John P. Bigelow to a third consecutive term. It was held on December 9, 1850.
Incumbent mayor John P. Bigelow was renominated by the city's Whig Party. However, some leading Boston Whigs did not approve of Bigelow's renomination and instead wanted to field a candidate from the city's West End. At the last-minute ahead of the election, 400 individuals signed nominating papers for Charles Coffin Amory to run as an independent Whig candidate.[1]
Backers of Amory's last-minute candidacy of made last-minute accusations against Bigelow, painting him as lacking the "dignity" to hold his office. These accusations were levied so close to the election that there was effectively no time left for Bigelow to retort them. They also accused Bigelow of having designs of seeking the state's governorship in November 1951's gubernatorial election.[1]