Nansen is an old lunar crater along the northern limb of the Moon, on the eastern side of the north pole. This feature is viewed from the edge from the Earth, and it must be observed from orbit to see much detail. When brought into view during a favorable libration, this formation can be located by finding Baillaud crater, then following the surface upward toward the limb.

Norwegian explorer of the Arctic and director of the League of Nations relief program for refugees of World War I (1861-1930)