The government of the Commonwealth of Puerto Rico is a republican form of government with separation of powers, subject to the jurisdiction and sovereignty of the United States. Article I of the Constitution of Puerto Rico defines the government and its political power and authority. The powers of the government of Puerto Rico are all delegated by the United States Congress and lack full protection under the U.S. Constitution. Because of this, the head of state of Puerto Rico is the President of the United States.

The governor of Puerto Rico is the head of government of the Commonwealth of Puerto Rico, and commander-in-chief of the Puerto Rico National Guard.