| Henry J. Seaman | |
| State: | New York |
| Term Start: | March 4, 1845 |
| Term End: | March 3, 1847 |
| Predecessor: | Henry C. Murphy |
| Successor: | Henry C. Murphy |
| Birth Name: | Henry John Seaman |
| Birth Date: | 16 April 1805 |
| Birth Place: | New York City, U.S. |
| Death Place: | New York City, U.S. |
| Resting Place: | Woodlawn Cemetery, New York City, U.S. |
| Party: | American |
| Profession: | Politician |
Henry John Seaman (April 16, 1805 – May 3, 1861) was a U.S. Representative from New York.
He was born on April 16, 1805, in Greenridge, Staten Island. Seaman engaged in agricultural pursuits.Promoter of Richmond village in 1836.
Seaman was elected as the candidate of the American Party to the Twenty-ninth Congress (March 4, 1845 – March 3, 1847).He served as director of the Staten Island Railroad in 1851.Secretary of the Plank Road Co. in 1856.Constructed the bridge over Fresh Kills.
He died at Marshland, Staten Island on May 3, 1861.[1] He was interred in Woodlawn Cemetery, New York City.