Patsaev is a lunar crater that lies on the far side of the Moon, to the northeast of the prominent crater Tsiolkovskiy. To the northwest is the smaller crater Lander.
This is a heavily damaged crater that now appears as little more than an irregular depression in the surface. Both the outer rim and interior floor are streaked by jumbled ridges of material that are radial to Tsiolkovskiy. Most likely this is ejecta deposited during Tsiolkovskiy's formation.
It is named after cosmonaut Viktor Patsayev who died in Soyuz 11 mission.