Antrorbis breweri, common name Manitou cavesnail, is a species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Lithoglyphidae.

[2] The specific name breweri is in honor of Dr. Stephen Brewer, the owner of Manitou Cave.

[2] This species is endemic to Alabama in the United States, and it is known only from its type locality.

[1] The type locality is Manitou Cave, Little Wills Valley, Coosa River Basin, Fort Payne, Alabama.

[2] Antrorbis breweri lives in cool stream in Manitou Cave.