Fersman is a large lunar impact crater on the Moon's far side.

It lies to the east of the crater Poynting, and west-northwest of Weyl.

There is a break in this chain across the crater's interior floor, then it continues again near the northern rim.

Several other small craters lie across the interior floor, including a grouping to the south of the midpoint.

The rim has an outward bulge along the southeast side and irregular edges to the north and south.