Following is a list of United States federal courthouses in the First Circuit, which is intended eventually to comprise all courthouse

Courthouse

A courthouse is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English speaking countries, buildings which house courts of law are simply...

s currently or formerly in use for the housing of United States federal courts

United States federal courts

The United States federal courts make up the judiciary branch of federal government of the United States organized under the United States Constitution and laws of the federal government.-Categories:...

 under the jurisdiction of the United States Court of Appeals for the First Circuit

United States Court of Appeals for the First Circuit

The United States Court of Appeals for the First Circuit is a federal court with appellate jurisdiction over the district courts in the following districts:* District of Maine* District of Massachusetts...

. Each entry indicates the name of the building along with an image, if available, its location and the jurisdiction it covers, the person for whom it was named, if applicable, and the dates during which it was used as a federal courthouse. Dates of use will not necessarily correspond with the dates of construction or demolition of a building, as pre-existing structures may be adapted or court use, and former court buildings may later be put to other uses. Also, the official name of the building may be changed at some point after its use as a federal court building has been initiated.

Key

†	Listed on the National Register of Historic Places National Register of Historic Places The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...  (NRHP)
††	NRHP-listed and also designated as a National Historic Landmark National Historic Landmark A National Historic Landmark is a building, site, structure, object, or district, that is officially recognized by the United States government for its historical significance...