Stenotrema pilula, also known as the pygmy slitmouth, is a species of pulmonate land snail in the family Polygridae.

The shells of pygmy slitmouths are smaller than the majority of Stenotrema species, with an elevated spire and 5 or more whorls.

The surface of the shell is covered by the fine, long hairs typical of species of the Stenotrema genus.

[3] NatureServe claims the species has been found in Virginia, but there are no historical records of its existence in the state.

[3] Pygmy slitmouths are most commonly found in leaf litter or under logs along the hillsides of dense hardwood forests.