Kuiper ( /ˈkaɪpər/) is a small lunar impact crater in a relatively featureless part of the Mare Cognitum. It is a circular, cup-shaped feature with only some minor wear. This crater was previously identified as Bonpland E before being renamed by the IAU. The lava-flooded crater Bonpland lies to the east at the edge of the Mare Cognitum.
To the east-southeast of Kuiper crater is the crash landing site of the Ranger 7 probe, the first American spacecraft to photograph the Moon. Gerard Kuiper was the Project Scientist for the Ranger program, and this feature was named for him after he died in 1973.