Argeo Paul Cellucci (April 24, 1948 – June 8, 2013) was an American politician and diplomat from Massachusetts. A Republican, he served in the House of Representatives and Senate of Massachusetts before being elected the state's lieutenant governor, a position he held from 1991-97 under Governor William Weld.When Weld resigned in 1997 after being nominated US Ambassador to Mexico, Cellucci became acting governor.