Fowler is a large lunar impact crater that lies in the northern hemisphere on the Moon's far side.

The outer rim of this crater has become worn and rounded by impact erosion until it has become little more than an irregular slope down to the interior depression.

An impact along the northeast rim, just north of Von Zeipel, has a relatively high albedo and is surrounded by a skirt of bright material.

This is indicative of a relatively recent impact that has not had time to darken due to space weathering.

By convention, these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Fowler.