Not to be confused with the current United States courts of appeals.

The United States circuit courts were the original intermediate level courts of the United States federal court system. They were established by the Judiciary Act of 1789. They had trial court jurisdiction over civil suits of diversity jurisdiction and major federal crimes. They also had appellate jurisdiction over the United States district courts. The Judiciary Act of 1891 (, also known as the Evarts Act) transferred their appellate jurisdiction to the newly created United States circuit courts of appeals, which are now known as the United States courts of appeals. On January 1, 1912, the effective date of the Judicial Code of 1911, the circuit courts were abolished, with their remaining trial court jurisdiction transferred to the U.S. district courts.