Daniel Dewey Barnard (July 16, 1797 – April 24, 1861) was an American politician and a U.S. Representative from New York.

[1] Barnard began practice in Rochester, New York, and served as prosecuting attorney of Monroe County in 1826.

He traveled in Europe in 1831, and moved to Albany, New York, in 1832 and continued the practice of law.

Barnard died in Albany, New York, on April 24, 1861 (age 63 years, 282 days).

He is interred at Albany Rural Cemetery, Menands, New York where he had given the dedication address in 1844.