Reuben Humphrey (September 2, 1757 – August 12, 1831) was a United States representative from New York. Born in West Simsbury, Hartford County, Connecticut on September 2, 1757, he completed preparatory studies and enlisted as a private in the Connecticut Militia for the Revolutionary War. He took part in several actions, including the Battle of Long Island, and received his commission as an officer. Humphrey continued his military service after the Revolution and was discharged as a major in 1796.