| Jefferson Bancroft | |
| Term Start: | 1846 |
| Term End: | 1848 |
| Office2: | Member of the Lowell, Massachusetts Board of Aldermen |
| Term Start2: | 1841 |
| Term End2: | 1842 |
| Office3: | Member of the Lowell, Massachusetts City Council |
| Term Start3: | 1839 |
| Term End3: | 1840 |
| Birth Date: | April 30, 1803 |
| Birth Place: | Warwick, Massachusetts |
| Party: | Whig |
| Occupation: | Farmer, Deputy Sheriff |
Jefferson Bancroft (April 30, 1803 – January 3, 1890) was a farmer and politician who served as the sixth Mayor of Lowell, Massachusetts.
Bancroft was born on April 30, 1803, in Warwick, Massachusetts.
From 1831 to his death in 1890 Bancroft was a Deputy Sheriff of Middlesex County.
Bancroft was a member of the Lowell City Council in 1839 and 1840, and a member of the Lowell Board of Aldermen from 1841 and 1842.
Beginning in 1840 Bancroft served four terms in the Massachusetts House representing Lowell. While in the Massachusetts House Bancroft sat as a member of the Whig Party.
Bancroft died on January 3, 1890, at his farm in Tyngborough, Massachusetts. He is buried in Lowell Cemetery.