Henry William Seymour (July 21, 1834 – April 7, 1906) was a politician from the U.S. state of Michigan. Seymour was born in Brockport, New York and attended the public schools, , and Canandaigua Academy. He graduated from Williams College of Williamstown, Massachusetts in 1855. He studied law in Albany, New York taking lectures at Albany Law School and was admitted to the bar in May 1856, but never practiced. Henry W. Seymour died at the age of seventy-one, while on a visit, in Washington, D.C. He is interred at Lakeview Cemetery of Brockport.