The United States is divided into five Petroleum Administration for Defense Districts, or PADDs. These were created during World War II under the Petroleum Administration for War to help organize the allocation of fuels derived from petroleum products, including gasoline and diesel (or "distillate") fuel. Today, these regions are still used for data collection purposes.

The Petroleum Administration for War was established in 1942 by executive order, and abolished in 1946. The districts are now named for the later Petroleum Administration for Defense which existed during the Korean War. It was established by the Defense Production Act of 1950, then abolished in 1954, with its role taken over by the United States Department of the Interior's Oil and Gas Division.