2.01 (GRAU index serial number 11F35 3K) is the designation of the third Buran-class orbiter to be produced as part of the Soviet/Russian Buran programme.

The design was improved using feedback from the earlier models of Buran-class shuttles, such as the flight of Buran and the construction of Ptichka.

[2] Since none of the second series orbiters were completed, only changes in the thermal protection system and OMS thrusters arrangement can be visible on 2.01.

Crew would have consisted of two cosmonauts — Igor Volk (commander) and Aleksandr Ivanchenko (flight engineer).

After residing at the Tushino factory where it was constructed, it was incorrectly announced in 2006 that orbiter 2.01 would be put on display in the Technik Museum Speyer, Germany.

However, the German Museum had actually bought OK-GLI, the jet-powered Buran atmospheric test vehicle, which appeared on display in its own new hangar from September 2008.