Jackson v. Denno, 378 U.S. 368 (1964), was a United States Supreme Court case concerning the process of determining whether a criminal defendant's confession was voluntary or coerced.

The case was argued on December 9 and 10, 1963, and decided on June 22, 1964.

In a majority opinion authored by Justice Byron White, the Court held that the rule requiring the jury in a criminal trial to determine the voluntariness of a confession, which was in place in New York at the time, was unconstitutional.

This decision overruled the Supreme Court's prior decision in Stein v. New York, a 1953 case in which the Court had upheld the same New York rule against a constitutional challenge.

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