| Election Name: | 1848 Boston mayoral election |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1847 Boston mayoral election |
| Previous Year: | 1847 |
| Election Date: | December 11, 1848 |
| Next Election: | 1849 Boston mayoral election |
| Next Year: | 1849 |
| Image1: | John P. Bigelow 5210004 015 012 (3x4).jpg |
| Candidate1: | John P. Bigelow |
| Party1: | Whig Party (United States) |
| Popular Vote1: | 5,150 |
| Percentage1: | 66.03% |
| Candidate2: | John W. James |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 1,143 |
| Percentage2: | 14.65% |
| Image4: | 3x4.svg |
| Candidate4: | Bradford Sumner |
| Party4: | Free Soil Party |
| Popular Vote4: | 929 |
| Percentage4: | 11.91% |
| Image5: | Jerome V. C. Smith by E. Billings 5210004 015 014 (3x4a).jpg |
| Candidate5: | Jerome V. C. Smith |
| Party5: | Know Nothing |
| Popular Vote5: | 417 |
| Percentage5: | 5.35% |
| Mayor | |
| Before Election: | Josiah Quincy Jr. |
| Before Party: | Whig Party (United States) |
| After Election: | John P. Bigelow |
| After Party: | Whig Party (United States) |
The 1848 Boston mayoral election saw the election of Whig Party nominee John P. Bigelow. It was held on December 11, 1848. Incumbent Whig mayor Josiah Quincy Jr. was not a nominee for reelection.