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.

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 70 cadets and the court-martialing of 20 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.