--- title: "Napue v. Illinois" citation: "Napue v. Illinois, 360 U.S. 264 (1959)" authority_id: "AUTH-SCOTUS-NAPUE-360-US-264" authority_type: "case" jurisdiction: "federal_nationwide" precedential_status: "binding" official_url: "https://www.govinfo.gov/content/pkg/USREPORTS-360/pdf/USREPORTS-360-264.pdf" url: "https://jason93.com/legal/federal-process/authorities/AUTH-SCOTUS-NAPUE-360-US-264/" legal_review: "2026-08-25" links_checked: "2026-10-15" links_available: 1 links_checked_count: 1 license: "CC BY 4.0" --- # Napue v. Illinois ## Holding used Due process forbids a prosecutor from knowingly using false testimony or leaving known false testimony uncorrected, including false testimony bearing on a witness's credibility. ## Material limitation The case involved testimony the prosecutor knew was false and applies its reasonable-likelihood formulation. It should not be collapsed into every ordinary impeachment nondisclosure. ## Official source and pinpoints 360 U.S. 264, 269–72 (1959): ## Used in - [Arraignment and Pretrial Disclosure](https://jason93.com/legal/federal-process/modules/20-pretrial/arraignment-and-pretrial-disclosure.md)