Ernest William Roberts (November 22, 1858 – February 27, 1924) was a U.S. Representative from Massachusetts. Born in East Madison, Maine, Roberts attended the public schools in Chelsea, Massachusetts.He was graduated from , Worcester, Massachusetts, in 1877, and from the law school of Boston University. Roberts was admitted to the bar in 1881 and then practiced in Boston. He served as member of the city council of Chelsea in 1887 and 1888. He served as member of the state House of Representatives in 1894 and 1896. He served in the state Senate in 1897 and 1898.