Kosmos 379 (Russian: Космос 379 meaning "Cosmos 379"), also known as T2K No.1, was an uncrewed test of the LK (the Soviet counterpart of the Apollo Lunar Module) in Earth orbit.

Earth orbit simulated propulsion system operations of a nominal lunar landing mission.

After three days it fired its motor to simulate hover and touchdown on the moon, in imitation of a descent to the lunar surface after separation of the Blok D lunar crasher[clarification needed] propulsion module.

These main maneuvers were followed by a series of small adjustments simulating rendezvous and docking with the Soyuz 7K-L3.

The LK lander tested out without major problems and decayed from orbit on September 21, 1983.