Abrams v. United States, 250 U.S. 616 (1919), was a decision by the Supreme Court of the United States upholding the criminal arrests of several defendants under the Sedition Act of 1918, which was an amendment to the Espionage Act of 1917. The law made it a criminal offense to criticize the production of war materiel with intent to hinder the progress of American military efforts.

The Sedition Act of 1918 was an Act of the United States Congress that extended the Espionage Act of 1917 to cover a broader range of offenses, notably speech and the expression of opinion that cast the government or the war effort in a negative light or interfered with the sale of government bonds.