Unterseeboot 2513 (U-2513) was a Type XXI U-boat of the Kriegsmarine that was operated by the United States Navy for several years after World War II.
On 2 September 1951, the Chief of Naval Operations ordered that the boat be sunk by gunfire. U-2513 was sunk west of Key West, Florida during rocket tests by the destroyer Robert A. Owens (DD-827) on 7 October 1951.