The Oregon Department of Transportation (ODOT) is a department of the state government of the U.S. state of Oregon responsible for systems of transportation. It was first established in 1969. It had been preceded by the Oregon State Highway Department which, along with the Oregon State Highway Commission, was created by an act of the Oregon Legislative Assembly in 1913. It works closely with the five-member Oregon Transportation Commission in managing the state's transportation systems.

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.