McNair is a small lunar impact crater on the far side of the Moon.

It lies within the double-ringed Apollo basin, inside the eastern part of the interior ring.

It has partly merged with the crater Jarvis, and the two share a common rim.

There are some tiny craterlets along the southern rim, and a narrow cut through the edge to the south-southwest.

The crater name was approved by the IAU in 1988 in honor of Ronald McNair, killed in the Space Shuttle Challenger disaster on January 28, 1986.