The Battle of Cobleskill (also known as the Cobleskill massacre) was a raid on the frontier settlement of Cobleskill on May 30, 1778. The battle marked the start of a phase in which Loyalists and Iroquois, encouraged and supplied by the British, raided and destroyed numerous villages on the western frontier of what is now New York and Pennsylvania.
A small party of Iroquois entered Cobleskill and drew the local defenders into a trap set by a much larger party of Iroquois and Loyalists under the command of Joseph Brant. After killing a number of the militia and driving off the remainder, Brant's forces destroyed much of the settlement. Patriots retaliated against Brant's actions against Cobleskill and other communities by destroying Iroquois villages later in the year, and Continental Army forces destroyed more Iroquois villages in the Clinton-Sullivan Expedition.