The United States Virgin Islands (abbreviated USVI; also called the U.S. Virgin Islands or American Virgin Islands), officially the Virgin Islands of the United States, are a group of Caribbean islands and an unincorporated and organized territory of the United States. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles to the east of Puerto Rico and west of the British Virgin Islands.

The U.S. Virgin Islands consists of the main islands of Saint Croix, Saint John, and Saint Thomas, and many other surrounding minor islands. Previously known as the Danish West Indies of the Kingdom of Denmark–Norway (from 1754 to 1814) and the independent Kingdom of Denmark (from 1814 to 1917), they were sold to the United States by Denmark in the 1917 Treaty of the Danish West Indies.

 They are classified by the United Nations as a Non-Self-Governing Territory, and are currently an organized, unincorporated United States territory. The U.S. Virgin Islands are organized under the 1954 Revised Organic Act of the Virgin Islands and have since held five constitutional conventions.

The U.S. Virgin Islands have a District Court, Superior Court and the Supreme Court.  The District Court is responsible for federal law, while the Superior Court is responsible for U.S. Virgin Islands law at the trial level and the Supreme Court is responsible for appeals from the Superior Court for all appeals filed on or after January 29, 2007.  Appeals filed prior to that date are heard by the Appellate Division of the District Court. Appeals from the federal District Court are heard by the United States Court of Appeals for the Third Circuit, located in Philadelphia, Pennsylvania.  District Court judges are appointed by the U.S. president, while Superior Court and Supreme Court judges are appointed by the governor.