The United States Court of Appeals for the Second Circuit (in case citations, 2d Cir.) is one of the thirteen United States Courts of Appeals. Its territory covers the states of Connecticut, New York, and Vermont, and it has appellate jurisdiction over the U.S. district courts in the following federal judicial districts: The Second Circuit has its clerk's office and courtrooms at the Thurgood Marshall United States Courthouse at 40 Foley Square in Lower Manhattan. Because the Second Circuit includes New York City, it has long been one of the largest and most influential American federal appellate courts, especially in matters of contract law, securities law, and antitrust law. In the 20th century, it came to be considered one of the two most prestigious federal appellate courts, along with the U.S. Court of Appeals for the District of Columbia Circuit. Several notable judges have served on the Second Circuit, including three later named Associate Justices of the United States Supreme Court: John Marshall Harlan II, Thurgood Marshall, and Sonia Sotomayor. Judge Learned Hand served on the court from 1924 to 1961, as did his cousin, Augustus Noble Hand, from 1927 until 1953. Judge Henry Friendly served from 1959 to 1986.

Current composition of the court

List of former judges

Chief judges

Succession of seats