Marvin Dawson Mathis (November 30, 1940 – April 17, 2017) was an American politician. He served in U.S. Representative as a Democrat, representing Georgia's 2nd congressional district from 1971 through 1981.
Mathis was elected as a Democrat to the United States House of Representatives serving in Congresses from January 3, 1971 through January 3, 1981. He was an unsuccessful candidate for nomination to the United States Senate in 1980.
In 1982 he tried to win his old seat in the house but lost to successor Charles Hatcher in the Democratic primary. He became a private advocate. He lived in Nashville, Georgia.