Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side.

There are some small outward bulges along the south and east where the edge has slumped inwards somewhat.

The interior floor of Millikan is relatively level, and there is a small, bowl-shaped crater to the north of the midpoint.

Prior to formal naming by the IAU in 1970,[1] Millikan was called Crater 47.

[2] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Millikan.