USS Laffey (DD-724) is an Allen M. Sumner-class destroyer, which was constructed during World War II, laid down and launched in 1943, and commissioned in February 1944. The ship earned the nickname "The Ship That Would Not Die" for her exploits during the D-Day invasion and the Battle of Okinawa when she successfully withstood a determined assault by conventional bombers and the most unrelenting kamikaze air attack in history. Today, Laffey is a U.S. National Historic Landmark and is preserved as a museum ship at Patriots Point, outside Charleston, South Carolina.

The Allen M. Sumner class was a group of 58 destroyers built by the United States during World War II. Another twelve ships were completed as destroyer minelayers. The class was named for Allen Melancthon Sumner, an officer in the United States Marine Corps. Often referred to as simply the Sumner, this class was distinguished from the previous Fletcher class by their twin 5-inch/38 caliber gun mounts, dual rudders, additional anti-aircraft weapons, and many other advancements. The Allen M. Sumner design was extended 14 feet (4.3 m) amidships to become the Gearing class, which was produced in larger numbers but did not see significant service in World War II.