Physa skinneri, common name the glass physa, is a species of freshwater snail, an aquatic gastropod mollusc in the family Physidae.

The shell of Physa skinneri is thin, narrowly ovoid, to ovoid-fusiform, with an obtusely rounded apex.

The spire is blunt with up to four weakly convex whorls separated by a shallow, broadly elongated suture.

The aperture is about 60% of the overall shell length, elongate-oval, rounded anteriorly, acute posteriorly, widest about a third of the length from the anterior end.

Outer lip thin, sharp, sometimes with a white band of callus thickening within, convex in the direction of growth.