Grayson's Additional Continental Regiment was an American infantry unit that served for two years and three months in the Continental Army during the American Revolutionary War. Like other Additional Regiments, Grayson's remained directly under George Washington's control, unlike state regiments. Authorized in January 1777, the unit's nine companies were recruited from the colonies of Virginia, Maryland, and Delaware. Raised by Colonel William Grayson, the regiment participated in actions in Northern New Jersey in early 1777, at Brandywine in September 1777, at Germantown in October 1777, and at Monmouth in June 1778. In April 1779 the regiment was absorbed by Gist's Additional Continental Regiment and ceased to exist.