In the U.S., any of the 94 trial courts of general jurisdiction in the federal judicial system.
Each state, as well as the District of Columbia and the Commonwealth of Puerto Rico, has at least one federal district court. Each court has at least one district judge and can have more than a score of them, as well as a clerk, a U.S. attorney, a U.S. marshal, one or more U.S. magistrates, bankruptcy judges, probation officers, and other staff. Decisions of the district courts are normally subject to appeal, typically to the United States Court of Appeals for the region in which the district court is located.