Dexter Mussey (born January 12, 1811 - June 29, 1890) was a Republican politician from the U.S. state of Michigan. He represented Macomb County in the Michigan House of Representatives for many years and served as Speaker of the House, 1861-62.Mussey was born in Rutland, Worcester County, Massachusetts, the son of Eli Muzzy and Persis Prouty. His mother was descended from Resolved White, who was a Mayflower passenger.