William Seymour (February 22, 1775 – December 27, 1848) was a United States Representative from New York.
He was born in Waterbury, Connecticut on February 22, 1775, and moved to Windsor, New York about 1793.
He attended public schools, studied law, was admitted to the bar, and commenced practice in Binghamton. He returned to Windsor in 1807 and served as justice of the peace. In 1833, upon his appointment as first judge of the Court of Common Pleas of Broome County, he returned to Binghamton.
Seymour was elected as one of the first trustees of the village in 1834. He was elected as a Jacksonian to the Twenty-fourth Congress (March 4, 1835 – March 3, 1837). He again served as first judge of Broome County until 1847, then resumed the practice of his profession in Binghamton where he died December 27, 1848. His interment was in Binghamton Cemetery.