Benjamin Dean (August 14, 1824 – April 9, 1897) was a member of the U.S. House of Representatives from Massachusetts.

Born in Clitheroe, Lancashire, England, U.K., fifth child of Alice Lofthouse and Benjamin Dean, he moved with his family to America at the age of five, and grew up in Lowell, Massachusetts.

In 1845 he was admitted to the bar, and founded the Lowell firm of Dean & Dinsmoor, Attorneys.

Thereafter he resumed his law practice in Boston, and was chairman of the board of parks commissioners in his later years.

Dean died at his home in South Boston on April 9, 1897, and is buried at Lowell Cemetery.