Dudley Marvin (May 9, 1786 – June 25, 1856) was a U.S. Representative from New York.

Born in Lyme, Connecticut, Marvin attended Colchester (Connecticut) Academy. He moved to Canandaigua, New York, in 1807 and studied law. He was admitted to the bar in 1811 and commenced practice in Erie, Pennsylvania. He returned to Canandaigua the same year and continued the practice of law. He served as lieutenant in the state militia in 1812. He was promoted successively to colonel, brigadier general, and major general.

Marvin was elected as an Adams-Clay Democratic-Republican to the Eighteenth Congress and reelected as an Adams candidate to the Nineteenth and Twentieth Congresses (March 4, 1823 – March 3, 1829). Devoted his time to developing various mechanical improvements, which he patented. He moved to New York City in 1835 and to Ripley, New York in 1843, and continued the practice of law.

Marvin was elected as a Whig to the Thirtieth Congress (March 4, 1847 – March 3, 1849). He resumed practice of law in Ripley, New York, where he died June 25, 1856. He was interred in East Ripley Cemetery.