William Arnon Henry (June 16, 1850 – November 24, 1932) was an American academic and agriculturist from Ohio. Henry studied at the National Normal University and Ohio Wesleyan University before becoming a principal of two high schools. After continuing his education at Cornell University from 1876 to 1880, Henry was appointed a professor at the University of Wisconsin. There, he led the growth of the College of Agriculture, becoming its first dean in 1891. He remained at the university until 1907, when he was named a professor emeritus.
Upon graduation, Henry was named professor of botany and agriculture at the University of Wisconsin. He married Clara R. Taylor in 1881.[1] Henry was commissioned by the Wisconsin State Assembly to study silage and the production of sugar from amber cane. In 1883, he was relieved of his botanical studies so that he could focus on building the College of Agriculture. He was appointed director of the Wisconsin Agricultural Experiment Station in 1887 and then was named the first dean of the agricultural school in 1891.[1] Under Henry, Wisconsin founded the first short course in agriculture and the first dairy school.[2]