| Henry Sedgwick | |
| Birth Name: | Henry James Sedgwick |
| State Senate: | New York State |
| District: | 7th |
| Term Start: | 1845 |
| Term End: | 1847 |
| Predecessor: | Elijah Rhoades |
| Successor: | District eliminated |
| Children: | 3 |
| Spouse: | |
| Resting Place: | Oakwood Cemetery |
| Birth Place: | Ithaca, New York, U.S. |
| Birth Date: | June 5, 1812 |
| Death Date: | June 14, 1868 (aged 56) |
| Relations: | Charles B. Sedgwick Daniel Gott (stepfather) |
Henry James Sedgwick (June 5, 1812 – June 14, 1868) was an American lawyer and politician who served as a member of the New York State Senate for the 7th district from 1845 to 1847.
He was the son of Stephen Sedgwick (1783–1830), a lawyer who practiced for a short time in Ithaca, and Anna (Baldwin) Sedgwick (1786–1872). They divorced in 1818, and Anna married Daniel Gott (1794–1864), who was a Congressman from 1847 to 1851.
Sedgwick was a member of the New York State Senate for the 7th district from 1845 to 1847, sitting in the 68th, 69th and 70th New York State Legislatures. He later served as the postmaster of Syracuse, New York.
In 1834, Henry J. Sedgwick married Lucinda Snow (d. 1855), and they had three children. In March 1856, he married Lucy Hubbard. Congressman Charles B. Sedgwick (1815–1883) was his brother. He was buried at the Oakwood Cemetery