Alleyne v. United States, 570 U.S. 99 (2013), was a United States Supreme Court case that decided that, in line with Apprendi v. New Jersey (2000), all facts that increase a mandatory minimum sentence for a criminal offense must be submitted to and found true by a jury, not merely determined to be true at a judge's discretion.

In the original trial the judge, rather than the jury, determined that Alleyne had probably brandished the firearm during the robbery, which caused the mandatory minimum sentence to rise to seven years (which was the sentence imposed).

The Supreme Court found that the question of whether or not the accused had brandished his weapon during the robbery was not merely a "sentencing factor," which the judge could unilaterally decide, but an "ingredient of the offense," which must be assessed and decided upon by the jury.

The Court also expressly overruled Harris v. United States (2002), which had reached a contrary ruling.

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