The State of New Hampshire has a republican form of government modeled after the Government of the United States, with three branches: the executive, consisting of the Governor of New Hampshire and the other elected constitutional officers; the legislative, called the New Hampshire General Court, which includes the Senate and the House of Representatives; and the judicial, consisting of the Supreme Court of New Hampshire and lower courts.

The governor of New Hampshire is the head of government of the U.S. state of New Hampshire.