The United States Courthouse, also known as the Federal Building, is a historic building located in Davenport, Iowa, United States. It has historically housed a post office, courthouse, and other offices of the United States government. The building now serves only as a federal courthouse, housing operations of the eastern division of the United States District Court for the Southern District of Iowa. In 2018, the operations of the Rock Island division of the United States District Court for the Central District of Illinois were also moved there.