Kuiper 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. It was named after Dutch-American astronomer Gerard Kuiper in 1976. Kuiper was the Project Scientist for the Ranger program. This crater was previously identified as Bonpland E. The lava-flooded crater Bonpland lies to the east at the edge of the Mare Cognitum.