Argeo Paul Cellucci (born April 24, 1948) is an American politician and diplomat who served as the 69th Governor of Massachusetts and US Ambassador to Canada.
Cellucci was born in Hudson, Massachusetts into an Italian-American political family and graduated from Boston College and Boston College Law School and the private Hudson Catholic High School. He and his wife Jan have two daughters, Kate and Anne (who is married to a Canadian hockey player, Craig Adams). He served in the United States Army Reserve from 1970 to 1978.
He is a Republican, and holds the distinction of never having lost an election over his three decades in elected office in overwhelmingly Democratic Massachusetts. He served as a member of the Massachusetts House of Representatives from 1977 to 1985. He then became a member of the Massachusetts Senate, serving from 1985 to 1991. From 1991 to 1999 he was Lieutenant Governor of Massachusetts, becoming the Acting Governor of Massachusetts in 1997 upon the resignation of William Weld.