| Charles Allen | |
| State: | Massachusetts |
| District: | 5th |
| Term Start: | March 4, 1849 |
| Term End: | March 3, 1853 |
| Preceded: | Charles Hudson |
| Succeeded: | William Appleton |
| Office1: | Member of the Massachusetts Senate |
| Term1: | 1836-1837 |
| Office2: | Member of the Massachusetts House of Representatives |
| Term2: | 1830, 1833, 1835, 1840 |
| Birth Date: | August 9, 1797 |
| Birth Place: | Worcester, Massachusetts |
| Death Date: | August 6, 1869 (aged 71) |
| Death Place: | Worcester, Massachusetts |
| Party: | Free Soil Republican |
| Alma Mater: | Yale College (A.M.) Harvard Law School (LL.D.) |
| Occupation: | Politician, lawyer, judge |
Charles Allen (August 9, 1797 – August 6, 1869) was a United States representative from Massachusetts.
He was born in Worcester, Massachusetts, on August 9, 1797, the son of Joseph Allen and grandnephew of Samuel Adams). Allen attended Leicester Academy (1809–1811) and Yale College (1811–1812) and studied law. He was admitted to the bar in 1821 and commenced practice in New Braintree. He returned to Worcester in 1824 and continued the practice of law. On October 23, 1827, he was elected a member of the American Antiquarian Society.
Allen was a member of the Massachusetts House of Representatives in 1830, 1833, 1835, and 1840; he also served in the Massachusetts State Senate in 1836 and 1837. In 1842, he was a member of the Maine-New Brunswick boundary commission created by the Webster–Ashburton Treaty that ended the Aroostook War. He was a judge of the Court of Common Pleas from 1842 to 1845 and a delegate to the 1848 Whig National Convention in Philadelphia. He was twice elected to Congress as a Free-Soil Party candidate (March 4, 1849 – March 3, 1853), but did not seek renomination in 1852. In 1849 he edited the Boston Whig, later called the Republican.
After leaving Congress, he resumed the practice of law in Worcester. He was a member of the state's constitutional convention in 1853, and was chief justice of the Suffolk County Superior Court from 1858 to 1867.
He received the honorary degree of A.M. from Yale in 1836 and that of LL.D. from Harvard in 1863. He was a delegate to the Peace Conference of 1861 held in Washington, D.C. to try to prevent the start of the Civil War.
Charles Allen died in Worcester, Massachusetts, on August 6, 1869. He was interred in the Rural Cemetery.
The home on which he began construction, the Charles Allen House, was completed by his descendants and was added to the National Register of Historic Places in 1980.