A municipal authority is a form of special-purpose governmental unit in Pennsylvania. The municipal authority is an alternate vehicle for accomplishing public purposes without the direct action of counties, municipalities and school districts. These purposes commonly include the acquisition, financing, construction and operation of projects such as water supply and sewer systems, airports, transit systems, parking garages, flood control systems, parks, and similar entities. An authority may fix and collect rentals or other charges and may issue revenue bonds. A board appointed by the establishing government or governments governs each authority.
A municipal authority may be said to be an independent corporate agent of the Commonwealth of Pennsylvania, exercising governmental, as well as private corporate power, in assisting the Commonwealth in meeting the needs of its citizens. Most, but not all, municipal authorities operate under Pennsylvania's Municipality Authorities Act.