The Black Eagle tank (Russian: Чёрный Орёл, Čërnyj Orël, or Object 640), was a presumed prototype main battle tank produced in the Russian Federation. It was thought to have been developed by the KBTM design bureau in Omsk in the late 1990s. A production version of this tank has never been publicly demonstrated. The Black Eagle has been cancelled, with all production and development halted.
The company that was developing the tank, Omsk Transmash, has gone bankrupt, and its designs and projects have been absorbed into Uralvagonzavod and state owned services. Uralvagonzavod was developing the T-95 in competition to the Black Eagle, and now owns the rights to both projects, but the Russian government has withdrawn all support and funding for the project.