Bythinella galerae is a species of very small freshwater snail, an aquatic gastropod mollusk in the family Amnicolidae.
As of 2002, no living animals had been found. Empty shells were used as the basis for the species description.
This species is endemic to France. The type locality is a cave in Castelbouc, Sainte-Enimie, Lozère.
Bythinella galerae is probably a troglobite.