| Thomas Newton Jr. | |
| Office: | Dean of the United States House of Representatives |
| Term Start: | March 4, 1817 |
| Term End: | March 4, 1830 |
| Preceded: | John Davenport |
| Succeeded: | William McCoy |
| Office2: | Member of the U.S. House of Representatives from Virginia |
| Term Start2: | March 4, 1831 |
| Term End2: | March 3, 1833 |
| Preceded2: | George Loyall |
| Succeeded2: | George Loyall |
| Term Start3: | March 4, 1801 |
| Term End3: | March 9, 1830 |
| Preceded3: | Josiah Parker |
| Succeeded3: | George Loyall |
| Constituency3: | (1801–1803) (1803–1813) (1813–1823) (1823–1830) |
| Office6: | Chairman of the Committee on Commerce |
| Term6: | March 4, 1819 - March 4, 1827 |
| Predecessor6: | Himself (as Chairman of the Committee on Commerce and Manufactures) |
| Successor6: | Churchill Caldom Cambreleng |
| Office7: | Chairman of the Committee on Commerce and Manufactures |
| Term7: | March 4, 1807 - March 4, 1819 |
| Predecessor7: | Jacob Crowninshield |
| Successor7: | Himself (as Chairman of the Committee on Commerce) |
| Office8: | Member of the Virginia House of Delegates from Norfolk Borough |
| Term8: | 1796–1798 |
| Predecessor8: | Himself |
| Successor8: | Robert Taylor |
| Term9: | 1794 |
| Predecessor9: | Thomas Mathews |
| Successor9: | Himself |
| Birth Date: | November 21, 1768 |
| Birth Place: | Norfolk, Virginia Colony, British America |
| Death Place: | Norfolk, Virginia, U.S. |
| Party: | National Republican (1825–1847) |
| Otherparty: | Democratic-Republican (until 1825) |
| Children: | John |
| Profession: | politician, lawyer |
Thomas Newton Jr. (November 21, 1768August 5, 1847) was an American politician. He was born in Norfolk, Virginia.
Newton was a member of the Virginia House of Delegates from 1796 to 1799. He served as a Democratic-Republican in the United States House of Representatives from March 4, 1801, to March 9, 1830, losing his seat when George Loyall contested his election. Newton regained his seat at the next election and served a final term from March 4, 1831, to March 3, 1833. In the bitterly contested 1824 presidential election, Newton was the only Virginia representative to support the Adams-Clay coalition. In 1804, Newton was one of the impeachment managers appointed by the House to prosecute the case for conviction on the articles of impeachment adopted against Judge John Pickering in his impeachment trial.[1]
Newton's son John was a Union general during the Civil War and chief engineer of the US Army in the 1880s.