| Bethuel Peck | |
| Birth Date: | June 16, 1788 |
| Birth Place: | Sand Lake, New York |
| Death Date: | July 11, 1862 |
| Nationality: | American |
| Occupation: | Physician and politician |
Bethuel Peck (June 16, 1788 – July 11, 1862) was an American physician and politician from New York.
He was the son of Daniel Peck (1754–1840) and Mehitable (Harvey) Peck (d. 1826), and was born in an area which in 1812 became part of the Town of Sand Lake, in Rensselaer County, New York. He married Jerusha Wiston, and their only daughter died in infancy.
He practiced medicine in Glens Falls, New York, and ran a drugstore there with Billy J. Clark.
He was a member of the New York State Senate (4th D.) from 1839 to 1842, sitting in the 62nd, 63rd, 64th and 65th New York State Legislatures.
He was President of the Dividend Mutual Insurance Company, of Glens Falls.