Marine Attack Squadron 513 (VMA-513) was a United States Marine Corps attack squadron consisting of AV-8B Harrier (V/STOL) jets. Known as the "Flying Nightmares", the squadron was last based at Marine Corps Air Station Yuma, Arizona and fell under the command of Marine Aircraft Group 13 (MAG-13) and the 3rd Marine Aircraft Wing (3rd MAW). VMA-513 was decommissioned on 12 July 2013.