The Eggnog Riot, sometimes known as the Grog Mutiny, was a riot that took place at the United States Military Academy in West Point, New York, on 24–25 December 1826. It was caused by a drunken Christmas Day party in the North Barracks of the academy. Two days prior to the incident, a large quantity of whiskey was smuggled into the academy to make eggnog for the party, giving the riot its name.
Alcohol possession at the academy was prohibited along with drunkenness and intoxication, both of which could lead to expulsion. Concern had been raised that drinking was starting to get out of hand among the 260 cadets at the academy. The cadets were informed that, due to the alcohol prohibition on the site, their Christmas eggnog would be alcohol-free, prompting the decision to smuggle liquor into the academy.
The riot eventually involved more than one-third of the cadets by the time it ceased on Christmas morning. A subsequent investigation by academy officials resulted in the implication of seventy cadets and the court-martialing of twenty of them and one enlisted soldier. Among the participants in the riot—though he was not court-martialed—was future Confederate States President Jefferson Davis.