William Henry Ferry (April 1819 in Remsen, Oneida County, New York – March 26, 1880 in Lake Forest, Lake County, Illinois) was an American politician from New York.
He was the son of Heman Ferry (1786–1856) and Roxanna (Burchard) Ferry (c.1796–1842). He attended Amherst College for some time. He married Mary Ann Williams (b. 1816), and they had seven children.
He was a member of the New York State Senate (19th D.) in 1860 and 1861. On March 25, 1861, he was elected President pro tempore of the State Senate.
He was a director of the Galena and Chicago Union Railroad.
He was buried at the Rosehill Cemetery and Mausoleum in Chicago