McAlpin's Corps, also known as McAlpin's Corps of Royalists and the American Volunteers, referred to either of two loyalist units in the British Army, in British Canada, commanded by Major Daniel McAlpin, during the American Revolutionary War. In most instances, the name described the American Volunteers, a corps of American Loyalists, who served in the 1777 Burgoyne Expedition, of the Saratoga Campaign. The term was also used, at times, to refer to a 'battalion' put under the command of McAlpin, in 1779, formed from the remnants of General Burgoyne's several loyalist corps, including the "American Volunteers", the , the , and Adams' Rangers.