| Litigants: | Pereira v. United States |
| Arguedate: | October 20 |
| Argueyear: | 1953 |
| Decidedate: | February 1 |
| Decideyear: | 1954 |
| Fullname: | Pereira, et al. v. United States |
| Usvol: | 347 |
| Uspage: | 1 |
| Parallelcitations: | 74 S. Ct. 358; 98 L. Ed. 435; 1954 U.S. LEXIS 2623 |
| Holding: | The word "knowingly" in the federal mail fraud statute (18 U.S.C. § 1341) should extend to all reasonably foreseeable consequences, even ones not specifically intended. |
| Majority: | Warren |
| Joinmajority: | Frankfurter, Jackson, Burton, Clark |
| Concurrence/Dissent: | Minton |
| Joinconcurrence/Dissent: | Black, Douglas |
| Notparticipating: | Reed |
Pereira v. United States, 347 U.S. 1 (1954), was a United States Supreme Court case in which the Court held that the word "knowingly" in the federal mail fraud statute, 18 U.S.C. § 1341,[1] should extend to all reasonably foreseeable consequences, even ones not specifically intended.[2] [3]