Argeo Paul Cellucci was an American politician and diplomat from the Commonwealth of Massachusetts. A Republican, he served as the 69th governor of Massachusetts from 1999 to 2001, and as the United States Ambassador to Canada from 2001 to 2005. He also served as the Commonwealth's 68th lieutenant governor from 1991 to 1999, as well as in the Massachusetts House of Representatives and Senate from 1977 to 1991.

The governor of the Commonwealth of Massachusetts is the chief executive officer of the government of Massachusetts. The governor is the head of the state cabinet and the commander-in-chief of the commonwealth's military forces.