| Birth Name: | Graham H. Chapin |
| Birth Date: | 10 February 1799 |
| Birth Place: | Salisbury, Connecticut |
| Death Place: | Mount Morris, New York |
| Alma Mater: | Yale College |
| Office: | Member of the House of Representatives from New York's 25th District |
| Term Start: | March 4, 1835 |
| Term End: | March 3, 1837 |
| Predecessor: | Samuel Clark |
| Successor: | Samuel Birdsall |
| Office2: | District attorney of Wayne County |
| Term Start2: | 1829 |
| Term End2: | 1830 |
Graham Hurd Chapin (February 10, 1799 – September 8, 1843) was an American lawyer and politician who served one term as a U.S. Representative from New York from 1835 to 1837.
Born in Salisbury, Connecticut, Chapin moved to Lyons, New York in 1817. He graduated from Yale College in 1819.He studied law. He was admitted to the bar in 1823 and practiced in Lyons.Surrogate of Wayne County 1826–1833.
He served as district attorney of Wayne County in 1829 and 1830. He moved to Rochester, New York, in 1833 and continued the practice of law.
Chapin was elected as a Jacksonian to the Twenty-fourth Congress (March 4, 1835 – March 3, 1837).
He died in Mount Morris, New York, September 8, 1843.