Chadwick is a lunar impact crater that lies on the far side of the Moon's surface, just beyond the southwestern limb.

This region of the lunar surface lies at the southern end of the ejecta blanket that surrounds the Mare Orientale impact basin.

Chadwick is roughly circular with a sharp-edged rim.

The inner wall is somewhat wider to the south-southeast, giving the crater a slight outward bulge toward De Roy.

The rim has not been significantly worn, and is not marked by any impacts of note.