Cygnus NG-16, previously known as Cygnus OA-16, is the sixteenth planned flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its fifteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-2) contract with NASA. The mission is planned to launch on 10 August 2021 for a 56 days mission at ISS. This is the fifth launch of Cygnus under the CRS-2 contract.