Ralph Harvey (August 9, 1901 – November 7, 1991) was an American politician who served six terms as a U.S. Representative from Indiana from 1947 to 1959, then again for three more terms from 1961 to 1966.
Harvey was elected as a Republican to the Eightieth Congress to fill the vacancy caused by the death of United States Representative Raymond S. Springer.
He was re-elected to the five succeeding Congresses (November 4, 1947 – January 3, 1959).
He was an unsuccessful candidate for reelection to the Eighty-sixth Congress in 1958.