The government of the U.S. state of Oregon, as prescribed by the Oregon Constitution, is composed of three government branches: the executive, the legislative, and the judicial. These branches operate in a manner similar to that of the federal government of the United States.

The governor of Oregon is the head of government of Oregon and serves as the commander-in-chief of the state's military forces. The title of governor was also applied to the office of Oregon's chief executive during the provisional and U.S. territorial governments.