The Spy: a Tale of the Neutral Ground is a novel by American writer James Fenimore Cooper. His second novel, it was published in 1821 by Wiley & Halsted. The plot is set during the American Revolution and was inspired in part by the family friend John Jay. The Spy was successful and began Cooper's reputation as a popular and important American writer.

James Fenimore Cooper was an American writer of the first half of the 19th century, whose historical romances depicting colonial and indigenous characters from the 17th to the 19th centuries brought him fame and fortune. He lived much of his boyhood and his last fifteen years in Cooperstown, New York, which was founded by his father William Cooper on property that he owned. Cooper became a member of the Episcopal Church shortly before his death and contributed generously to it. He attended Yale University for three years, where he was a member of the Linonian Society.