Severin Beliveau (born March 15, 1938) is an American attorney, political activist and lobbyist in Maine.
Beliveau was elected to the Maine House of Representatives in 1966 after graduating from Georgetown University Law Center and was influential in the rise of the Maine Democratic Party in state politics after a century of Republican dominance.
He later served in the Maine Senate and, in 1986, unsuccessfully sought the Democratic Party's nomination for Governor.
Considered a moderate Democrat, Beliveau lost to the more liberal Maine Attorney General James Tierney.
His Irish mother was Margaret McCarthy and his Franco-American father, Albert J. Beliveau, Sr.,[3] was a justice of the Maine Supreme Court.