John Henry Sununu (born July 2, 1939) served as the 75th Governor of New Hampshire (1983–89) and later White House Chief of Staff under President George H. W. Bush.
He is the father of John E. Sununu, a former senator from New Hampshire and Chris Sununu, the Governor of New Hampshire. Sununu was the chairman of the New Hampshire Republican Party from 2009 to 2011.