William Whipple, Jr. (1909–2007) was a brigadier general of the U.S. Army, who played a significant role in the development of the Marshall Plan in the aftermath of World War II. He was also the chief engineer for the construction of the 1964 New York World's Fair, and a recognized authority on water resources, having written more than 100 books and articles on water supply, navigation, flood control, and power generation.
Whipple was a 1930 graduate of the United States Military Academy at West Point, New York. He was also a graduate of Princeton University and a Rhodes Scholar. He served on General Eisenhower's staff in World War II.
He died in Princeton, New Jersey and was buried at Arlington National Cemetery, Arlington, Virginia.