Abraham Woodhull (October 7, 1750January 23, 1826) was a leading member of the American
Culper Spy Ring in
New York City and
Setauket, New York during the
American Revolution. He used the alias "Samuel Culper", later "Samuel Culper, Sr.," a play on
Culpeper County, Virginia suggested by
George Washington. The Culper Ring was a successful operation which provided Washington with valuable information on the British Army headquartered in and operating out of New York, from October 1778 until the end of the
American Revolutionary War. After the United States gained independence, Woodhull served as a
magistrate and a judge in
Suffolk County, New York.