Dwight Marcy (June 8, 1840 – May 7, 1887) was an American politician. Marcy, son of Calvin and Elvira (Clark) Marcy, was born, June 8, 1840, in Union, Tolland County, Connecticut. After graduation from Yale College in 1863, he studied law in Hartford, Conn., in the office of Waldo & Hyde, and was admitted to the bar in 1865. He then began practice in Plainfield, Conn., but on his appointment as State's Attorney for Tolland County, in June, 1867, he removed his office to Rockville, in the township of Vernon, where he continued until his death. In May, 1867, he was chosen Assistant Clerk of the Connecticut House of Representatives and served as Clerk of the same body the following year, and as Clerk of the Connecticut Senate in 1869. In 1878, 1879, and 1880, he was elected to represent the t