- Source: Opisthostoma simplex
- Opisthostoma simplex
- Opisthostoma
- List of species named simplex
- IUCN Red List endangered species (Animalia)
- List of endangered invertebrates
- List of endangered molluscs
- List of critically endangered molluscs
- List of critically endangered invertebrates
- IUCN Red List critically endangered species (Animalia)
- List of recently extinct invertebrates
Opisthostoma simplex is a species of minute land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae.
This species is endemic to Malaysia. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.