William Smith Clark (July 31, 1826 – March 9, 1886) was an American professor of chemistry, botany, and zoology; a colonel during the American Civil War; and a leader in agricultural education. Raised and schooled in Easthampton, Massachusetts, Clark spent most of his adult life in Amherst, Massachusetts. He graduated from Amherst College in 1848 and obtained a doctorate in chemistry from Georgia
