"Middlebrook encampment" may refer to one of two different seasonal stays of the Continental Army in central New Jersey near the Middlebrook in Bridgewater Township in Somerset County. They are usually differentiated by either the date of the encampment or their chronological order.

The Continental Army was the army of the United Colonies representing the Thirteen Colonies and later the United States during the American Revolutionary War. It was formed on June 14, 1775 by a resolution passed by the Second Continental Congress, meeting in Philadelphia after the war's outbreak. The Continental Army was created to coordinate military efforts of the colonies in the war against the British, who sought to maintain control over the American colonies. General George Washington was appointed commander-in-chief of the Continental Army and maintained this position throughout the war.