Giglio v. United States

Decided February 24, 1972. Warren Earl Burger delivered the opinion of the Court.

Docket 70-29 · 405 U.S. 150 (1972) · Cited 7,003 times

Holding

Neither the Assistant's lack of authority nor his failure to inform his superiors and associates is controlling, and the prosecution's duty to present all material evidence to the jury was not fulfilled and constitutes a violation of due process requiring a new trial.

The Court’s statement of the holding, from the opinion’s syllabus. The syllabus is prepared by the Reporter of Decisions and is not part of the opinion of the Court — read the official opinion for authority.

How the Justices voted

Decided 7–0.

“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. Source: the Supreme Court Database (Spaeth et al.), Washington University.

Precedents cited

Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.

• Napue v. Illinois · 360 U.S. 264 (1959)
• Brady v. Maryland · 373 U.S. 83 (1963)
• Mooney v. Holohan · 294 U.S. 103 (1935)
• Pyle v. Kansas · 317 U.S. 213 (1942)

Cited by

Later Supreme Court opinions in our collection that cite this case.

• United States v. Bagley · 473 U.S. 667 (1985)
• United States v. Agurs · 427 U.S. 97 (1976)
• Van de Kamp v. Goldstein · 555 U.S. 335 (2009)
• McCleskey v. Zant · 499 U.S. 467 (1991)
• Banks v. Dretke · 540 U.S. 668 (2004)
• Wearry v. Cain · 577 U.S. 385 (2016)
• Glossip v. Oklahoma · 604 U.S. 226 (2025)
• Albright v. Oliver · 510 U.S. 266 (1994)
• California v. Trombetta · 467 U.S. 479 (1984)
• Arizona v. Youngblood · 488 U.S. 51 (1988)
• United States v. Ruiz · 536 U.S. 622 (2002)
• DeMarco v. United States · 415 U.S. 449 (1974)
• Imbler v. Pachtman · 424 U.S. 409 (1976)
• Kyles v. Whitley · 514 U.S. 419 (1995)
• Strickler v. Greene · 527 U.S. 263 (1999)
• Smith v. Phillips · 455 U.S. 209 (1982)
• Pennsylvania v. Ritchie · 480 U.S. 39 (1987)
• Kastigar v. United States · 406 U.S. 441 (1972)
• Heckler v. Community Health Services of Crawford County, Inc. · 467 U.S. 51 (1984)
• United States v. Valenzuela-Bernal · 458 U.S. 858 (1982)
• Moore v. Illinois · 408 U.S. 786 (1972)
• Arizona v. Roberson · 486 U.S. 675 (1988)
• United States v. Ash · 413 U.S. 300 (1973)

Official text

Read the official opinion (U.S. Reports, govinfo.gov)

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Source: Supreme Court of the United States, slip opinions (1972). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-07-03. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).