Landsteiner is a tiny, bowl-shaped lunar impact crater in the central Mare Imbrium.

It was named after Austrian-American pathologist and Nobel laureate Karl Landsteiner.

[1] It is a circular, cup-shaped feature with no appreciable erosion.

Nearby to the south is a low wrinkle ridge named the Dorsum Grabau.

Farther south is the prominent crater Timocharis.