William Peery (1743 – December 17, 1800) was an American farmer, lawyer, and politician from Cool Spring, near Milton, in Sussex County, Delaware. He was a veteran of the American Revolution, a Continental Congressman from Delaware, and a member of the Delaware General Assembly. They saw some action during the winter of 1777–78 in support of the Flying Camp that helped protect Washington's camp at Valley Forge. Peery died on December 17, 1800 in Lewes, Delaware, and is buried in the Cool Spring Prebsbyterian Church Cemetery near Lewes.