The Port of Portland is the port district responsible for overseeing Portland International Airport, general aviation, and marine activities in the Portland, Oregon metropolitan area in the United States.The Oregon Legislative Assembly created the Port of Portland in 1891. The current incarnation was created by the 1970 legislature, combining the original Port with the Portland Commission of Public Docks, a city agency dating from 1910.

The Port of Portland has been considered a regional government with jurisdiction in Multnomah, Washington and Clackamas counties since 1973.Nine commissioners regulate the organization; they are appointed by the Governor and approved by the State Senate. Each commissioner serves a four-year term and can be reinstated to the same post indefinitely. One requirement of commissioners is that two of the nine must live in Multnomah, Washington, or Clackamas county while the remaining three are free to live where they choose.Commissioners elect the Port of Portland's executive director who oversees the daily operations of the port.Commissioners meet monthly to discuss the policies of the Port of Portland.

Port of Portland's marine terminals export the largest amount of wheat from the United States and third largest amount in the world.[3] It is also the fifth largest port for tonnage, third largest auto import gateway in the country, the largest mineral bulk port on the U.S. west coast, and the 17th largest port for cargo containers in the United States.[citation needed] Marine terminals are located along the Willamette River and the Columbia River. Terminals are served by rail (Union Pacific and BNSF railroads), connecting interstates, and river barges. Around one thousand businesses and corporations are said to use the Port's marine facilities.[citation needed] Major exports are wheat, soda ash, potash, and hay; major imports are automobiles, steel, and limestone. Imports and exports at the Port of Portland total about $14 billion USD, annually. The Port's terminal facilities (T-2, T-4, and T-5 are on the Willamette; T-6 is on the Columbia[1]):